Years later, at a retro gaming convention, a little girl would run up to a kiosk playing random NES tunes and freeze. She’d tug her father’s sleeve. “Daddy, that song—it’s the one from the radio when the bad men were outside.”

He glanced at the clock. 3:17 a.m. Sunrise was at 6:42.

He hit the chord tracks next. There were six of them. He had one pulse channel left. So he did what the old composers did: arpeggios . Rapid-fire single notes instead of chords. A C-E-G became C, E, G, C, E, G at 60 Hz—fooling the ear into harmony. It sounded like a haunted calliope.

The bass? Triangle wave. No compromises. The original MIDI had a fretless bass sliding around; Leo turned it into a blocky, resonant thrum that felt like a heartbeat in a computer’s chest.

Leo rubbed his eyes, the glow of his monitor the only light in his cramped apartment. He’d been an audio engineer for a decade, but “MIDI to 8-bit” was a forgotten art—like repairing a gramophone with horse glue and prayers. The old NES chips, the Ricoh 2A03, had a specific, brutal charm: four pulse waves, one triangle, one noise channel, and a sample channel so limited it could barely hiccup.