🎛️ StemFlipper

Upload a song → AI separates it into stems → each stem becomes MIDI + a playable sliced-sample instrument (SFZ), plus best-effort synth presets (Vital) for mono synth lines and EQ/reverb match per stem → download a DAW project bundle (stems, MIDI, instruments, effects, Reaper project, manifest).

Research/educational demo. Separation runs on CPU on this Space — a 3–4 min song takes several minutes; the progress bar keeps moving. Transcription is an editable starting point, not a perfect score.