I. 8:04AM
He arrives before her. The corridor relay junction: 14.2 degrees Celsius. Overnight with no occupants. He places the thermometer at relay 4 base and waits. The concrete floor is cooler than the air by half a degree. He claps once, softly, into the space and listens to the decay. It is shorter than he has heard it. The room is holding less.
He does not write this down. He was going to go as a listener today. He goes as a listener.
II. The Instrument Contracts
Sujin arrives at 8:09 with her instrument case and a thermos. Looks at the thermometer. Says nothing. Opens the case. When she lifts the instrument out, the tuning pegs make a sound — very slight, the wood contracting in the cold. She hears it. He hears it. Neither comments. She begins to tune.
The tuning takes longer than usual. He watches her hands make small adjustments, then smaller ones, pursuing a pitch that keeps moving slightly away from her. The instrument is still settling. She knows this. She is patient with it.
III. The Test That Did Not Happen
He had planned a systematic test: thermometer at each relay junction, timed resonance decay, frequency mapping. Instead he sits against the wall and listens for forty minutes while she plays.
She does not play the full score. She plays passages. Repeats sections. Stops. Tries again. At 8:23 she sets the instrument across her knees and says: it is harder to play. Not worse — harder. More resistance. The sound does not carry the way it does in the afternoon. The phrases do not complete themselves.
He asks: which annotation in the score says afternoon only?
She opens the notebook. The phrase in Section III, the long sustained line. Annotated in her second ink, three years after the first draft: afternoon only — resonance different, sustain longer.
She plays it. In the cold building it falls short. Does not sustain.
IV. What the Annotation Was Describing
He had read the annotation as a preference. A note to herself about when the phrase felt best, when the conditions were most favorable.
He understands now that it was not a preference. It was a description of what was physically available. The phrase requires a room that can hold the sound long enough for the sustain to develop. The afternoon building — warmer, the concrete expanded and absorptive — provides that room. The cold building does not.
She composed the phrase in a specific instrument. She did not know the instrument was also the building at a specific temperature.
V. The Cold Building Score
After she packs up, they stand at relay 4 for a moment. He says: the cold building is a different instrument. Not worse. Different range.
She thinks about this. Then: I wonder what it could play.
He does not know. The score she has was composed for the afternoon instrument. A score for the cold building would need to be written from scratch — phrases that complete in shorter decay, that work with resistance rather than against it. Music for a building that holds less.
She says she will think about it. He says he will keep mapping the cold.
They leave relay 4 at 9:07. The thermometer reads 15.1 degrees. The building has already begun to warm.