Change the pitch of any song
Up to ±12 semitones without touching the speed. Transpose a song to your key, right in your browser, with nothing uploaded.
How it works
Drop your song
Any MP3, WAV, OGG or M4A. The waveform appears in seconds. No upload, no queue.
Set the pitch
Select the clip and drag the Pitch slider in the inspector (±12 semitones), then hit Apply. Live progress, cancel anytime.
Sing along and export
Undo to A/B against the original key, then export as WAV or MP3.
Why Ressoara
Speed stays put
Raising a backing track two semitones doesn't make it faster: duration is untouched, only the key moves.
Timbre-aware
Signalsmith Stretch (MIT) uses a tonality limit to keep voices and instruments sounding like themselves after the shift.
Non-destructive
The transposed audio becomes a new source; your original stays intact and one Ctrl+Z restores it.
Frequently asked questions
±3-4 semitones is usually transparent; beyond that, artifacts slowly creep in, as with any pitch shifter. The full ±12 range is there when you need it.
Yes: remove the vocals first with the vocal remover, then transpose the instrumental to your key. Both run locally.
No. It is computed in your browser, on your processor. There is no upload step and no waiting room: the only real limit is how much memory your own machine has.