Pick the passage
Drag an A-B loop across the bars that are not working yet, or drop the playhead anywhere and start from there.
Slow it down, change the key
The two things a hard passage needs are time and a key you can sing in. Jambox gives you both independently: slow the recording to a crawl without dropping its pitch, or move the song to your key without changing its tempo.
Download freeHow it works
Set the speed
From half speed to the original, with the pitch held where it was. The click follows the new tempo, so the count stays honest.
Move the key
Shift by semitones until the melody sits in your voice; the chords are re-spelled in the new key as you go.
What you get
- Tempo from half speed to the original
- Transposition in semitones, independent of tempo
- Chords and lyrics that follow both
Where it stops
Extreme slow-downs smear transients — that is the nature of stretching audio rather than a setting to fix, and most practice happens between 60% and 80%. Pitch shifting is chromatic: there is no capo simulation.
Questions
Does slowing down change the pitch?
No. Time stretching and pitch shifting are separate controls, so the song stays in its key while it slows.
Can I loop just one bar?
Yes — an A-B loop can be as short as a single beat, and it plays round and round until you stop it.
Does the metronome follow the new tempo?
It does. The click is locked to the song’s grid, which moves with the speed control.
Related
A metronome that follows the song
The click stays locked to the song’s own grid, so it marks the beat instead of arguing with it. Its level is separate from the mix.
A count-in before you play
Choose two, four or eight beats and the click counts them on screen before the song starts.
A-B loops
Mark the two bars that keep beating you, and the app plays only those, round and round.