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Separate songs into stems, or find their tempo and key. Every separation starts with a free preview.

Separate

Vocal RemoverSplit any song into six stems with MIDI.
Acapella ExtractorPull the lead vocal out on its own for remixes and edits.
Karaoke MakerRemove the vocals and sing over the original backing.

Analyze

BPM FinderFreeFind the tempo of any song, with half and double time.
Key FinderFreeFind the musical key of any song.

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Stem separation: BS-RoFormer-SW (bs-roformer-infer, MIT; weights enerjazzer/BS-ROFO-SW-Fixed); HT-Demucs 6s (Meta AI Research, demucs MIT).

MIDI transcription: YourMT3+ (mimbres/YourMT3) for pitched stems and ADTOF (CC BY-NC-SA) for drums.

Lead and backing vocal split: models by UVR (Anjok07 & aufr33), used under their MIT licence.

Lyrics transcription: OpenAI Whisper (MIT).

Tempo and key detection: Beat This! (Foscarin, Schlüter & Widmer, CPJKU); S-KEY (Kong et al., Deezer).

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