What is Multi Looper?

Multi Looper is a free web app that lets you create multiple loop sections on any YouTube video and play them back in sequence. Perfect for instrument practice, language learning, dance choreography, and any scenario where you need to watch the same part over and over.

Is Multi Looper free?

Yes, Multi Looper is completely free to use. No account registration is required.

Where is my data stored?

Loop section settings are stored in your browser's localStorage. No personal data is sent to or stored on our servers.

What can I use Multi Looper for?

Music practice (repeating difficult phrases), language learning (replaying listening materials), dance (breaking down choreography), sports (analyzing form in slow motion), transcription, and more.

Music transcription

Transcribe music from YouTube, phrase by phrase

Transcribing a song is essentially "loop, listen, write, repeat" — dozens or hundreds of times. Multi Looper is the loop half of that loop. It gives you fast, pitch-preserved loops on arbitrarily small sections.

Start transcribing

Good transcriptionists build a section for every 1-2 bar phrase in the song, work through them in order, and come back the next day to refine. Multi Looper is built for exactly that workflow.

Very short loops on dense passages

For a fast chromatic line or a dense chord voicing, a 1-second loop is often what you need. Multi Looper accepts sections of any length — there is no minimum. Use keyboard arrows to nudge start/end times by 1 second (or Shift + arrows for 1-second precision), and set per-section speed to 0.5x.

When you can clearly hear the inner voices, bump the speed back up to check that what you wrote makes sense at tempo.

Walking the whole song

After a first pass you will have 20-50 sections covering the entire song. Uncheck the ones that are done. Check the ones that still need work. Press play. The tool walks through the remaining work in order, looping each section until you press stop. No playhead dragging.

Revisiting tomorrow

Transcription is not a one-session task. Because Multi Looper saves sections per video in localStorage automatically, you can close the tab, open your notation software, come back the next day, and your work is exactly where you left it. This is essential for long pieces.

Workflow tips from experienced transcriptionists

Transcribe bass first — it anchors harmony and rhythm
Use 0.5x only for dense passages; 0.75x works for most melodies
Create a section for every 1-2 bar phrase, not larger
Name each section with the measure numbers for easy reference
Use gradual speed-up to verify: if a section sounds right at 0.5x, 0.75x, and 1.0x, you transcribed it correctly

FAQ

Can I export my transcription from Multi Looper?

Multi Looper is a loop tool, not notation software. Use MuseScore, Sibelius, or Finale for notation. Multi Looper's role is accelerating the listening side.

Can I loop 2 seconds or less?

Yes. There is no minimum loop length. The YouTube player handles very short loops cleanly on most videos.

Does speed change affect pitch for transcription?

No. YouTube's IFrame player preserves pitch at all speeds from 0.25x to 2x, so your transcribed key stays correct.

Ready to practice?