By dawn, I'd transcribed the sheet music by ear. That's when I saw it: the left-hand pattern wasn't random. It was a cypher. A descending bass line spelling out coordinates in musical notation. 34° N, 118° W. A warehouse district in Los Angeles. The last place SOPHIE had ever recorded before the accident.

The file landed in my inbox at 3:17 AM on a Tuesday. No subject line. Just the attachment: SOPHIE_One_More_Time_PIANO_Dream_MIX.mp3 . The sender was a string of numbers I didn't recognize.

My headphones were already on. I pressed play.

But it wasn't the original vocal. It was new . Phrases I'd never heard. A verse about "the blue light through the blinds" and "metal tears on a plastic cheek." The piano underneath wasn't playing the melody. It was playing against it—harmonies folding into dissonance, then bursting into cascading major chords that sounded like joy cracking through grief.