SplitWave — Stems, Pitch, Speed & Loop

SplitWave does two things, both 100% on your device — no uploads, no servers, no account: 🎛 STEMS — separate any song into 6 stems (vocals, drums, bass, guitar, piano, other) with Meta's Demucs v4 (MIT), GPU-accelerated via WebGPU. Drop a file or capture a tab's audio, then solo / mute / balance each stem, play along, and download any stem or the mix as WAV or MP3. Includes practice FX (pitch, speed, EQ, cleanup) and BPM / key analysis. 🎚 LIVE — real-time pitch, speed, A–B loop, EQ and a vocal reducer on ANY tab's audio (YouTube, SoundCloud, Bandcamp, podcasts, most video) — no separation needed. Transpose by semitones or cents, slow down without changing pitch (or use Varispeed), loop a section, and seek — all from the side panel. Spotify is supported too (opt-in): speed, pitch, A–B loop and EQ. 100% local & private: no tracking, no servers. The only network request is a one-time model download, cached locally afterward.