Live Duet Trader
The instant you pause, it darts in with a melodic answer in your key. The instant you play again, it ducks out of the way. Interleaved trading — not turn-based waiting.
Play any pitched instrument (piano, voice, guitar) into your mic. After ~3 notes the partner starts learning your intervals; whenever a ~320 ms gap opens it trades a phrase in your inferred key, and ducks the moment you re-enter.
Real-time gap-detected trading · live Markov · zero deps · no AI callskey —