A440

The Equal Temperament

Chapter 1: A440

The tuning fork was steel, four and three-quarter inches from tip to heel, stamped with the letter A and the number 440 on the flat of its left tine, and it had belonged to Leonard Resnikoff before it had belonged to Clara, and before Leonard it had belonged to a man whose name Clara had never learned, a tuner at the Leningrad Conservatory who had given it to her father in 1971 as a parting gift, the year Leonard left the Soviet Union with a suitcase, a tuning lever, three felt mutes, and this fork, which was the only object in Clara's possession that she had never once considered replacing, because a tuning fork does not wear out, does not go flat, does not stretch or compress or fatigue the way a string fatigues, the way a pin slips in its block, the way a hammer felt hardens under ten thousand repetitions of the same blow — a tuning fork vibrates at the frequency determined by its mass and the stiffness of its steel, and if the steel does not corrode and the tines are not bent, it will produce the same pitch on the day its owner dies as on the day it was struck for the first time, which is to say that the tuning fork is the one fixed point in a tuner's life, the thing that does not move, the reference tone against which every other pitch is measured and found to be sharp or flat or, in those rare moments that arrive like a clearing in weather, exactly right.

Clara struck it against her knee.

The tone bloomed in the kitchen of the Huang residence, 4512 Southeast Hawthorne Boulevard, a 1924 bungalow with original fir floors and a Yamaha U1 upright that David Huang had bought for his daughter, who was nine and studying with a teacher on Division Street and who practiced, by the evidence of the hammer wear, almost exclusively in the middle two octaves, where the études lived, where the simple sonatinas kept their uncomplicated demands. Clara held the fork by its heel and touched the ball of the heel to the soundboard of the Yamaha, and the tone transferred from steel to spruce, and the spruce amplified it, gave it body and resonance and the particular woody coloration that a Yamaha U1 soundboard, twenty years into its working life, adds to any sound it is asked to carry.

She listened.

The A above middle C — A4, the piano's forty-ninth key, the note from which every other note on the piano would be derived — was flat by approximately three cents, which was not much, which most people would never hear, which David Huang's nine-year-old daughter would certainly not hear, but which Clara heard the way a carpenter sees a floor that is not level, the way a baker knows by the weight of dough in her hands that the hydration is two percent too low, which is to say not as information but as sensation, as wrongness, as a room whose door will not quite close.

She set the tuning lever on the pin for A4.

The lever was chrome vanadium steel, a Hale number four with a rosewood handle that Leonard had shaped on a lathe in the garage of the house on Southeast Ankeny where Clara had grown up, the house that was now a duplex owned by a couple who ran a letterpress studio in the basement, the house whose garage no longer existed, replaced by a raised garden bed in which, the last time Clara had driven past, tomatoes grew in the place where her father had shaped the handle that she now gripped with her right hand, her thumb on the flat of the shank, her fingers wrapped around the rosewood, which had been polished by twenty-eight years of her grip and by however many years of Leonard's grip before that until the wood had the patina of something that has been touched ten thousand times, the particular darkness that forms where oil from the hand meets grain of the wood and the wood accepts it, absorbs it, becomes something that is not quite wood anymore but wood-plus-use, wood-plus-life.

She turned the pin a quarter-degree clockwise.

The string tightened. The pitch rose. She struck A4 with her right index finger — not with a hammer blow, not the way a pianist strikes, but with a firm, even press that set the string vibrating cleanly, without the percussive attack that would mask the fundamental with overtones — and she listened to the A4 against the memory of the fork, against the ghost of 440 hertz that was still present in the soundboard, still humming in the spruce if you knew how to hear it, and she heard the beats.

Beats were the phenomenon that organized Clara's working life. When two frequencies were close but not identical, they produced a pulsing, a wavering, a rhythmic rise and fall in volume that occurred at a rate equal to the difference between the two frequencies. If the A4 string vibrated at 438 hertz and the fork vibrated at 440, the beats would pulse twice per second, a slow wobble like a tremolo, like a singer whose vibrato has gone too wide. As the string was brought closer to 440, the beats would slow — once per second, once every two seconds, once every three — until, at the moment the string reached 440, the beats would stop, and the two tones would merge into one, and the sound would become still, and the stillness was the thing Clara listened for, the absence that confirmed the presence of the correct pitch.

She turned the pin another fraction of a degree.

The beats slowed. She could feel them in her sternum, in the bones of her inner ear, in the place behind her eyes where sound becomes not hearing but knowing. Two per second. One per second. Slower. The wavering stretched out like a tide going slack, the moments between pulses lengthening, the sound becoming more and more nearly still, and then — it was still. The A was 440. The reference was set. Everything else would follow from this.

She muted the strings on either side of the A4 unison with felt wedges — two strips of red felt, each the width of a pencil, pressed between the strings so that only the center string of the three-string unison could vibrate — and began the work of setting the temperament.

The temperament was the heart of the matter. A piano has eighty-eight keys and approximately two hundred and thirty strings, and every one of those strings must be tuned to a specific frequency, and those frequencies are determined by a system called equal temperament, which divides the octave into twelve equal semitones, each separated from the next by a ratio of the twelfth root of two, which is approximately 1.05946, which is an irrational number, which means that no interval on an equally tempered piano is pure, that every fifth is slightly narrow, every major third is substantially wide, every interval is a compromise, a deliberate imperfection introduced so that the piano can play in all twelve keys without any key sounding worse than any other.

This was the bargain that equal temperament struck. In earlier tuning systems — meantone, Werckmeister, Kirnberger, the well temperaments that Bach may or may not have had in mind when he wrote the Well-Tempered Clavier — some keys were purer than others, some intervals closer to the ratios that the ear hears as consonant, as resolved, as right, but the cost was that other keys were unusable, their intervals so wide or narrow that they produced not music but a kind of acoustic nausea, a wrongness so profound that composers simply avoided those keys, wrote around them, accepted the limits that the tuning imposed. Equal temperament eliminated those limits. It made every key equally usable by making every key equally impure. It was democracy applied to the overtone series. It was the New Deal of pitch.

Clara did not think about this as she worked. She had thought about it once, years ago, when she was learning, when the mathematics of tuning was still something she needed to understand rather than something she simply did, the way a fluent speaker of a language no longer thinks about grammar, the way a driver no longer thinks about the clutch. What she thought about now was the beats. She was setting the temperament in the middle octave, F3 to F4, tuning each interval by ear, listening for the beat rates that would confirm that the intervals were correctly tempered, that the fifths were narrow by the right amount, that the fourths were wide by the right amount, that the major thirds beat at the rates that equal temperament demanded.

She tuned F3 to A4. A descending major third. In equal temperament, this interval should beat at approximately seven beats per second at this pitch level, a rapid flutter that most people would hear as a roughness in the sound, a slight sourness, a quality that untrained ears might describe as "not quite right" but that Clara heard as correct, because correct, in equal temperament, was not pure. Correct was a specific degree of impurity. Correct was the right amount of wrong.

Seven beats per second. She counted them against the clock in her head, the internal metronome that twenty-eight years of tuning had calibrated to a reliability that she trusted more than any electronic device, more than the Korg tuner that sat in her bag unused, a concession to modernity that she carried the way a surgeon might carry a textbook — not because she needed it but because there were moments when a client wanted to see the needle on the screen, wanted the visual confirmation that the pitch was correct, did not trust the ear alone, did not understand that the ear was the more precise instrument, that the ear could hear things the electronic tuner could not, that the ear could hear the difference between a unison that was technically in tune and a unison that was alive.

The Yamaha U1 came into tune the way a house comes into order when someone who knows how to clean moves through it — room by room, corner by corner, each correction small in itself but accumulating, the whole becoming more coherent, more settled, more itself. Clara worked from the temperament octave outward, tuning octaves in both directions, checking intervals as she went, listening for the consistency that would tell her the piano was settling into the grid of equal temperament the way a city settles into its street plan, each note finding its place relative to every other note, the whole system interlocking, interdependent, a network of compromises that, taken together, produced something that functioned.

She finished the mid-range and moved to the bass. The bass strings were different — wound strings, a steel core wrapped with copper wire, heavier, stiffer, and because of their stiffness, subject to a phenomenon called inharmonicity. A theoretically perfect string would produce overtones that were exact multiples of the fundamental — the second partial at twice the frequency, the third at three times, the fourth at four — but real strings, because they have stiffness as well as flexibility, produce partials that are progressively sharper than the theoretical values, and this sharpness increases as you move to higher partials, which means that a bass string's overtones are not where mathematics says they should be, which means that if you tune a bass octave to be pure — free of beats — the notes will actually be flat relative to the temperament, because the upper note's fundamental will be lower than the bass note's second partial, and the octave that sounds pure will be an octave that lies.

This was stretch tuning. In the bass, Clara tuned the lower notes slightly flat of equal temperament, and in the treble, she tuned the higher notes slightly sharp, stretching the piano's range so that the octaves remained beatless — or very nearly so — while accounting for the inharmonicity that the string's stiffness introduced. Every piano required a different amount of stretch, because every piano's strings had different stiffness, different scaling, different lengths and gauges, and the amount of stretch was not something Clara calculated but something she heard, something the piano told her, if she listened.

She was listening now to the lowest A on the Yamaha, A0, the piano's first key, a note so low that it was more felt than heard, more vibration than pitch, a frequency of 27.5 hertz that the human ear perceived not as a clear tone but as a series of pulses, a drumming in the air, and she was tuning it against the A an octave above, A1, listening for the beats between the upper note's fundamental and the lower note's second partial, and the beats were slow, one every two seconds, and she was tightening the pin for A0, bringing it down — in the bass, you stretched downward, tuning flatter than tempered — and the beats slowed further, and she held her breath without meaning to, which was something she had done since she was sixteen, since the first time Leonard had let her set a pin on the Portland Symphony's Steinway, the held breath a habit she had never been able to break and had stopped trying to break because it was part of the ritual, part of the listening, the way a held breath is part of any act of extreme attention.

The beats stopped.

She moved to the treble. The treble was where the Yamaha showed its age — the hammers slightly hardened from twenty years of student practice, the tone brighter than it should have been, a brittleness in the upper octaves that a voicing would soften but that was not Clara's job today, today was a tuning, not a voicing, and she made a note in her appointment book — a physical book, spiral-bound, the kind that office supply stores still sold in diminishing quantities — to mention the voicing to David Huang when he came home, to suggest that the hammers could be needled, softened, brought back to the rounder tone that the piano had possessed when it was new.

The appointment book was open on the Yamaha's music desk, and the page for Monday, October 14th, showed four appointments in Clara's handwriting, which was small and angular and legible only to Clara and to Yuki, her apprentice, who had learned to read it the way a pharmacist learns to read a doctor's script, by exposure and necessity:

8:30 — Huang, 4512 SE Hawthorne. U1. Quarterly. 11:00 — First Presbyterian, 1200 SW Alder. Kawai RX-5. Monthly. 2:00 — Morrison, 738 NW Savier. Steinway M. Annual. 4:30 — Mrs. Ashford, 2847 NE Klickitat. Bösendorfer Imperial. Monthly.

Four pianos. Four houses. Four different instruments with four different histories and four different sets of needs, and Clara would move among them the way a doctor moves among patients, listening, diagnosing, correcting, knowing that the correction was temporary, that the piano would begin going out of tune the moment she closed the lid, that the felt would continue to compress, the pins would continue to settle, the soundboard would continue to respond to the humidity that Portland delivered in abundance from October through June, the long wet season that swelled the spruce and pushed the bridge up and sharpened the strings and meant that Portland pianos spent eight months of the year drifting sharp and four months drifting flat, a tidal cycle that Clara had been tracking for so long that she could, upon entering a house and striking a single key, tell you not only how far out of tune the piano was but in which direction it had drifted and therefore what season it thought it was, what humidity it had been living in, what temperature, what kind of air.

She finished the Yamaha at 10:15. She replaced the felt mutes in her bag — a black canvas bag, heavy, the tools arranged in compartments she had sewn herself because no commercially available bag organized the tools the way she wanted them organized — and she closed the fallboard over the keys and she closed the lid over the strings and she wrote the date and her initials in the corner of the page of the appointment book and she left the Huang residence and walked to her car, a 2012 Subaru Outback with 187,000 miles on it, a car she had chosen because the cargo area was flat and long enough to lay the tuning lever down without angling it, which was the only criterion she had applied to the purchase, a fact that Martin, her ex-husband, had found both admirable and maddening, the way he had found most things about Clara both admirable and maddening, the way she had found most things about Martin both beautiful and insufficient, though she did not think of Martin now, had not thought of Martin in some time, weeks perhaps, which was itself a kind of tuning, a gradual adjustment, a bringing into tolerance of a distance that had once been unbearable and was now simply the distance between two people who had loved each other and stopped, not because the love had ended but because the love had not been enough, the way a pure interval is not enough to make a piano playable in all twelve keys.

She drove west on Hawthorne toward the river. The October light was the particular gray-gold of Portland in autumn, the clouds thin enough to let the sun through but thick enough to soften it, to remove the shadows, to make the city look like a photograph taken through gauze, and the trees along Hawthorne were turning, the maples going orange and the oaks going brown and the street trees that the city had planted — ornamental pears, mostly — dropping leaves that lay on the sidewalks in damp layers, and Clara drove through this with the window cracked two inches because she liked to hear the city, liked the sound of tires on wet pavement, the hydraulic sigh of a bus pulling from a stop, the distant percussion of construction somewhere south, sounds she catalogued without effort, sounds she placed on the frequency spectrum the way a painter places colors on the wheel, each sound having a pitch even if it was not a musical pitch, each sound occupying a position in the range of human hearing, which extended, in a healthy ear, from approximately 20 hertz to approximately 20,000 hertz, a range that narrowed with age, the high frequencies fading first, the upper limit dropping year by year like a tide going out, a recession so gradual that most people never noticed it, never knew what they had stopped hearing, never missed the frequencies that had left them.

Clara noticed.

She had noticed six weeks ago, on a Tuesday, tuning a Steinway B at a recording studio in the Pearl District, a piano that she had tuned dozens of times, a piano whose voice she knew the way she knew the voices of friends, and she had been tuning the top octave, the last octave, the notes above C7 where the strings were short and stiff and the inharmonicity was extreme and the tone was more percussion than pitch, and she had struck the highest A — A7, 3520 hertz — and listened for the beats against the A an octave below, and the beats had been difficult to hear, not absent but muffled, as though someone had laid a cloth over the upper register of her hearing, and she had leaned closer to the strings and struck the note again and listened again and the beats were there but they were indistinct, the edges softened, the way a word becomes unclear when you are falling asleep and the world is pulling away from you, and she had finished the tuning and told no one and driven home and sat at her kitchen table with the tuning fork in her hand and struck it and listened to the 440 and heard it clearly, purely, the fundamental and the first partial and the second partial all present and accounted for, and she had been reassured for approximately one hour before she understood that 440 hertz was not the problem, that 440 hertz was in the range that the ear held longest, that the problem was above, in the territory where the beats between intervals were fastest and finest and most demanding of the ear's resolution, the territory that age took first.

She had made an appointment with an audiologist. The appointment was Thursday. She had not told anyone about the appointment. She had not told Yuki, who would worry. She had not told Martin, who would be kind in a way that would make it worse. She had not told Mrs. Ashford, who would understand, because Mrs. Ashford was eighty-four and had been losing her hearing for years and knew what it was to have the world grow quieter, but Clara did not want understanding, did not want the comfort that understanding offered, because the comfort would make it real, would move it from the category of suspicion to the category of fact, and in the category of suspicion it could still be nothing, could still be a bad day, a head cold, fatigue, the kind of temporary dulling that every tuner experienced from time to time and that passed the way weather passed, leaving the ear clear again, sharp again, capable again.

She parked on Alder Street in front of First Presbyterian and sat in the car for a moment with her hands on the steering wheel and the engine off and the sound of rain beginning on the roof, the rain that had been threatening all morning and was now arriving with the unhurried certainty of Portland rain, which did not storm so much as settle, which did not pour so much as persist, and she listened to the rain and heard in it what she always heard in rain, which was white noise, which was all frequencies sounding simultaneously, which was the opposite of a tuning fork, which was everything instead of one thing, chaos instead of reference, and she took the tuning fork from her bag and held it in her left hand and did not strike it, just held it, felt its weight, its coolness, the slight roughness where the stamped letters — A 440 — had been pressed into the steel decades ago in a factory that might no longer exist in a country that no longer existed, and the fork was cool and still and silent in her hand, and she put it back in the bag and got out of the car and went to tune the church piano.

The Kawai RX-5 at First Presbyterian was a six-foot-one grand in satin ebony, and it lived in a fellowship hall that the church used for services on Sundays and for meetings during the week and for a preschool program on Tuesday and Thursday mornings, which meant the piano was played by the church pianist, who was competent, and by the preschool teacher, who was enthusiastic, and by the preschool children, who were neither competent nor enthusiastic but who struck the keys with a directness that Clara respected, a willingness to make sound without apology, without technique, without the self-consciousness that adults brought to the keyboard, the hesitation that was really a form of fear, the fear of making the wrong sound, the wrong note, the wrong music.

The fellowship hall was empty. Clara let herself in with the key the church office had given her years ago, a brass key on a ring with a plastic tag that said PIANO TUNER in the church secretary's handwriting, and she opened the grand's lid and propped it on the long stick and looked at the strings and the hammers and the dampers and saw what she always saw, which was the interior of an instrument that was also a piece of furniture, a machine that was also an object of beauty, the cast-iron plate painted gold, the strings fanning from the tuning pins at the near end to the hitch pins at the far end, the bridges arching across the soundboard like the spines of animals, the dampers resting on the strings like a row of sleeping birds, and she set her bag on a chair and took out the lever and the mutes and the fork and she struck the fork against her knee and touched it to the soundboard and the A bloomed in the empty hall and filled the space the way incense fills a church, not all at once but gradually, spreading, the sound reaching the walls and the ceiling and the windows and coming back, the hall's acoustics adding a reverb that was two seconds long, maybe two and a half, which was generous for a room this size, a gift of the high ceiling and the plaster walls and the hardwood floor, and Clara listened to the A decay through that reverb and heard it clearly, every partial present, the fundamental and the harmonics stacked above it like a tower, like a column of sound, and she began to tune.

She worked for an hour and forty minutes. The Kawai was in better shape than the Yamaha — it was tuned monthly rather than quarterly, and the monthly cycle meant the pins had less distance to travel, less correction to make, and the piano held its tuning more reliably because the corrections were small and the felt around the pins was not being torqued through large angles that would cause the pins to settle back after she left. She finished at 12:40 and packed her tools and closed the lid and left the hall and returned the key to the hook inside the office door, where no one was sitting because the secretary worked mornings only, and she drove to a bakery on Twenty-third Avenue and ordered a sandwich and a coffee and sat at a table by the window and ate without tasting the food, not because the food was bad but because she was thinking about Thursday, about the audiologist, about the small soundproof room where she would sit with headphones on and press a button when she heard a tone and the tones would get higher and higher and at some frequency she would stop pressing the button, not because she had decided to stop but because there would be nothing to hear, and the audiologist would mark that frequency on a graph and the graph would show what Clara already suspected, which was that the upper boundary of her hearing was moving downward, was retreating, was abandoning the territory where the finest discriminations of tuning lived, the territory that had been hers for twenty-eight years, the territory that her father had trained her to inhabit, the high country of pitch, the place where the difference between a tuning that was correct and a tuning that was alive was measured in fractions of a hertz, in beats so fast they were almost not beats but texture, a quality of the sound rather than a feature of it, and if she could not hear those beats then she could not hear the difference, and if she could not hear the difference then she was not Clara Resnikoff, not the tuner her father had made, not the ear that the Portland Symphony trusted, not the hands that Mrs. Ashford's Bösendorfer had known for twenty-two years, she was someone else, someone diminished, someone operating on memory and habit rather than on the direct perception that was the only thing that had ever made her any good.

She finished the sandwich. She drank the coffee. She drove to the Morrison residence.

The Steinway M at the Morrison residence was a five-foot-seven grand from 1948, a postwar instrument with a bright, almost aggressive tone that the Morrisons loved and that Clara found interesting in the way that a doctor finds an unusual case interesting — not better or worse than other cases, but particular, individual, a piano that had opinions about how it wanted to sound and that resisted, in small ways, any attempt to make it sound like something other than what it was. She tuned it in an hour and twenty minutes. The Morrisons were not home. The housekeeper let her in and offered her water, which she accepted, and left her alone with the piano, which she preferred.

At 3:45 she drove to Mrs. Ashford's house.

The house was on Klickitat Street in the Alameda neighborhood, a Craftsman built in 1921, with a deep front porch and tapered columns and a garden that Mrs. Ashford had maintained herself until two years ago, when her knees had made the maintenance impossible and she had hired a service, a young man named Jorge who came every two weeks and who did competent work that Mrs. Ashford criticized in detail and with affection. The Bösendorfer Imperial was in the living room, which was large by the standards of a 1921 Craftsman, large enough to hold a nine-foot-six-inch grand piano without the room feeling crowded, though the piano dominated the space the way a grand piano always dominates any room it occupies, its curved side like the hull of a ship, its lid, when raised, like a wing.

Clara had been tuning this piano for twenty-two years. Leonard had tuned it before her, for eleven years before that. The piano had been in this house for thirty-seven years, since Mrs. Ashford and her husband, Douglas, had bought it from a dealer in San Francisco and had it shipped to Portland in a custom crate, and Douglas had died fourteen years ago and Mrs. Ashford had continued to play the piano every day, every single day, Chopin mostly, the nocturnes and the mazurkas, the music that Douglas had loved, the music that Mrs. Ashford played not for an audience but for the house, for the room, for the piano itself, which was, Clara believed, the best piano in Portland, better than the Steinway at the symphony, better than any piano in any showroom or studio or concert hall in the city, because it had been played and tuned with love for thirty-seven years and because a Bösendorfer Imperial was, in Clara's judgment, the finest piano ever made, nine extra keys in the bass that extended the range below the standard eighty-eight, a soundboard of Alpine spruce that resonated with a warmth and depth that no other manufacturer had ever matched, a sound that was not bright and not dark but something in between, something that existed in a category of its own, a sound that Clara could have identified blindfolded from a single note, the way you can identify the voice of someone you love from a single word spoken in another room.

Mrs. Ashford opened the door.

She was small, five feet and perhaps one inch, and she wore a cardigan over a blouse and her white hair was pinned up and her eyes, behind glasses with tortoiseshell frames, were sharp and dark and amused, the eyes of a woman who had been paying attention for eighty-four years and had no intention of stopping.

"The A is sharp," she said.

"Good morning, Mrs. Ashford," Clara said.

"It went sharp in the rain. I can hear it. Can you hear it from there."

"I can hear it when I get inside."

"Your father could hear it from the porch," Mrs. Ashford said, and this was a joke, one of the recurring jokes of their twenty-two-year relationship, the joke that Leonard Resnikoff had possessed supernatural hearing, that he could diagnose a piano from the street, from the car, from the next room, and the joke was funny because it was almost true, because Leonard's ear had been, by every account Clara had ever heard, the finest in Portland, perhaps the finest on the West Coast, an ear so acute that the Portland Symphony's music director had once said, only half in jest, that Leonard Resnikoff could hear a fly land on a piano string from thirty feet away, and Clara had inherited this ear, or trained it, or both — the question of whether extraordinary hearing was genetic or learned was one that Clara had never resolved and had stopped trying to resolve, because the answer did not matter, because what mattered was that the ear worked, that it heard what needed to be heard, that it could distinguish between a unison that was technically in tune and a unison that sang.

Clara entered the house and set her bag on the bench by the door and walked to the piano and lifted the lid and looked at the strings, the soundboard, the bridges, the plate, and everything was as it had been last month and the month before that and the month before that, which was to say everything was slightly different, because a piano is a living thing in the sense that it changes constantly, responding to temperature and humidity and use and time, the felt hardening, the strings stretching, the soundboard breathing with the seasons, and Clara struck the A and heard what Mrs. Ashford had heard, the sharpness, the pitch sitting a few cents above where it belonged, pushed up by the October rain, by the moisture that had swelled the spruce and raised the bridge and tightened the strings, and she struck the fork and set it on the soundboard and began to bring the A down, back to 440, back to the center, back to the reference point from which everything else would be measured.

Mrs. Ashford sat in her chair by the window and did not speak while Clara worked.

This was the protocol. This was how it had been for twenty-two years. Mrs. Ashford understood that tuning required silence, required concentration, required the kind of attention that conversation disrupted, and she sat with a book in her lap — today it was a volume of poetry, Clara could see the short lines on the page from across the room — and she read or did not read and Clara tuned, and the only sounds in the room were the sounds of the piano, the struck notes, the turning pins, the felt mutes being placed and removed, the tuning lever clicking softly as it seated on the pins, and these sounds were, for Clara, the sounds of the most complete contentment she knew, the contentment of doing the thing she was made to do in the company of someone who understood why the thing mattered.

She finished at 6:15, as the October dark was settling over the house and Mrs. Ashford had turned on the lamp by her chair and the room was warm with the lamp's light and the piano was in tune, every note in its place, every interval correctly tempered, every octave clean, every unison alive, and Clara closed the lid and put her tools in her bag and Mrs. Ashford stood and walked to the piano and sat on the bench and played the opening of Chopin's Nocturne in E-flat major, opus 9, number 2, the most famous of the nocturnes, the one that everyone knows, the one that begins with a melody so simple and so beautiful that it seems impossible that anyone could have written it, that it seems instead to have always existed, to have been waiting in the piano for someone to find it, and Mrs. Ashford played it slowly, more slowly than Chopin marked it, more slowly than any pianist would play it in a concert, and the slowness was not hesitation but attention, each note given its full weight, its full duration, and the Bösendorfer sang the way only a Bösendorfer can sing, the sound filling the room and filling Clara, filling the space behind her eyes where sound became not hearing but feeling, and she stood by the door with her bag in her hand and listened until Mrs. Ashford reached the first ornamental turn and then she said, quietly, "It sounds good."

"It sounds right," Mrs. Ashford said, without stopping.

Clara let herself out.

She drove home in the dark, east on Fremont and south on Thirty-third, the wipers clearing the rain in slow arcs, and the car smelled of felt and steel and the particular dusty sweetness of piano interiors, the smell that clung to her clothes and her hands and her hair, the smell that Martin had once said was the smell of Clara, the smell he would know anywhere, and she parked in front of her house — a small house, a two-bedroom bungalow on Southeast Yamhill that she had bought with the money from the divorce and that she had not decorated so much as furnished with the things she needed, a bed, a table, chairs, a bookshelf, a piano, an old Knabe upright that she kept in tune not for practice but for testing her ear, for the daily ritual of striking the fork and checking the A and knowing that she could still hear it, could still hear the truth of 440 hertz, the single fixed point in a world of constant drift — and she went inside and set the bag on the table and took out the fork and struck it against her knee and listened.

A440.

She heard it clearly. She heard every partial. She heard the fundamental and the harmonics rising above it like a ladder, each rung present, each rung distinct, and she held the fork in the kitchen of her small house and listened to it decay, the sound growing softer but not less clear, diminishing but not distorting, fading but not failing, and when it was gone she set the fork on the table and went to bed.

Thursday was two days away.