Audio
Move a song into your vocal range without speeding it up or slowing it down.
Source: a fragment of a song made with Lyria. Right: two semitones lower, same tempo.
I
The “Key” slider moves the song by semitones, up to a full octave in either direction, while the tempo stays put. The “Tempo” slider does the opposite: from 50% to 200% speed without touching the key.
Processing runs in your browser with Signalsmith Stretch, so the small shifts of 1–4 semitones that singers and karaoke fans need sound natural, not robotic.
Run “Find key & BPM” first and the slider shows which key you'll land in.
II
Or a backing track
Semitone by semitone; tempo separately
MP3 or another format
III
±12 semitones
50% to 200%
When the key is known
The file stays on your device; the server steps in only when the browser can't
No watermark, no subscription
IV
Usually 1–3 semitones. Try −2, listen and adjust.
Yes. No sign-up, no subscription, no watermark. In the browser, files up to 1 GB. When the server is needed: without an account, up to 100 MB, 10-minute videos and 60-minute audio; signed in, up to 500 MB, 30-minute videos and 3 hours of audio.
Files are processed right in your browser and never uploaded. If the browser can't handle one (a rare format, a very large file or an old browser), it goes to our server instead and is deleted about an hour after it's ready.
Find a track's key and tempo, then shift it to suit your voice if you need to.
Slower for practice or dancing, without the warped sound.
A track's tempo in beats per minute, plus its key and Camelot code.
Cut the part you need on a waveform, with smooth fades at both ends.
Drop an audio file here
or choose one on your device
MP3, M4A, WAV, OGG, FLAC, or a video — we'll take its sound
Files are processed right in your browser and never uploaded. If your browser can't handle one, our server does it
