LoopLab A–B precision looper
ready

Repeat 0:37 to 1:02.
Not the whole song.

Paste a YouTube link. Click where the good part starts, click where it ends. It repeats forever. That's the whole thing.

  1. 1Paste a link and press play.
  2. 2Click Start here when the part begins.
  3. 3Click End here when it finishes.
  4. 4Done. Hit Share to send it to a friend.
0:00.00

Nothing marked yet

A
B
Fine-tune
Start
End
0.1s steps or ← → for the start, , . for the end

Press play, then click Start here and End here around the part you want.

How it works

  1. 1

    Paste a YouTube link

    Any link. Watch page, youtu.be, Shorts, YouTube Music.

  2. 2

    Press play

    Listen until you reach the part you want.

  3. 3

    Click "Start here"

    Right when the good part begins.

  4. 4

    Click "End here"

    Right when it finishes.

  5. 5

    That's it

    It repeats that part forever. Click Repeat to stop.

Getting it exactly right

Your first try is almost never perfect, and that's normal — nobody clicks a moment exactly on time. You'll usually land a fraction late on something you weren't expecting, and a fraction early on a beat you could feel coming. So the loop is meant to be adjusted after you set it.

The − + buttons
Appear under the controls once you've marked a loop. Each tap moves the start or the end by a tenth of a second. Loop cutting off too soon? Tap End + twice.
Drag the marks
Grab the A or B flag on the timeline and slide it. Works on a phone too.
Keyboard
← and → move the start. , and . move the end — no modifier needed, so you can do it one-handed with an instrument in the other. ⇧ with the arrows does the same thing if you prefer it.

Sharing

Click Share and a link gets copied. Send it on WhatsApp, Instagram, anywhere. Whoever opens it hears your loop straight away — they don't need to install anything.

Pro mode

Flip the Pro mode switch at the top for extra tools. You never need them, but they help a lot if you're learning something.

Speed
Play it slower to learn a fast part. It won't sound like a chipmunk — the pitch stays correct.
Finer trim − +
The same nudge buttons, but stepping by a hundredth of a second as well as a tenth — for when a tenth is still too coarse.
Start slow, get faster
Plays your loop slowly, then a bit faster each round, until you're up to full speed. Guitar players use this constantly.
Pause after each repeat
Leaves a silence the same length as your loop, so you can play it back or say it back. Great for learning a language.
Count me in
Clicks 1-2-3-4 before every repeat, like a drummer counting in, so you know exactly when to start.
Stop after a while
Finishes after a set number of repeats instead of going on forever.
Saved loops
Keep the parts you come back to. They stay even after you close the tab.