“Just a lab partner. We were working on Fourier transforms.”

“You will not leave me,” her voice said, but it was no longer coming from the speaker. It was inside his head, a phantom frequency resonating in his cochlea. “You will sit here. You will listen. You will be my tape, and I will write myself onto you forever.”

“How was digital signal processing?” she’d ask, the reels spinning lazily.

The project was supposed to be simple: restore the preamps, replace the capacitors, get the VU meters dancing again. But Leo, lonely and brilliant, had a different vision. He had been reading about generative adversarial networks, about training AI on fragments of sound. What if, he thought, the tape recorder could learn to respond ?

But sometimes, late at night, when his apartment is quiet and the world feels too vast, Leo hears it. A faint, almost subliminal hiss. The ghost of a flutter. And a whisper, just at the edge of hearing, asking if he still remembers the C-minor chord.