A-B loops

One bar is usually the problem. Mark its two ends and Jambox plays that stretch again and again — no rewind, no counting, and the chord chart keeps following the loop.

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How it works

Mark A and B

Drag either end on the ruler, or set each one at the playhead; a loop can be one beat long.

Let it run

The transport loops the stretch until you stop it, and the playhead keeps circling inside it.

Practise inside the loop

Slow it down, change the key, or record a take over it — the loop survives all three.

What you get

Loops as short as a single beat
Handles you can drag on the ruler
A loop that survives tempo and key changes

Where it stops

One loop at a time: A and B are the two ends of the stretch you are working, not a set of saved regions. A bookmark is where a passage you want to come back to next week lives.

Questions

Can I loop more than one section?

Not at once — one A-B pair at a time. A note on the timeline is the way to keep hold of several places.

Does the loop survive a tempo change?

Yes. The loop is stored in the song’s own time, so slowing down keeps the same bars inside it.

Does it play gaplessly?

It jumps back to A as the playhead reaches B, and the jump happens at once rather than a bar later.

Notes pinned to the timeline

Drop a note at the playhead — “watch the turnaround” — and it is still there next week.

Slow it down, change the key

Loop a hard bar at half speed, or shift the key to fit your voice — tempo and pitch move independently.

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.