Intro234 turns any YouTube song into labelled sections your whole band can jump to, loop, and count into together. Mark it once. Share one map. Stop scrubbing.
Play the track, tap one key at every transition. Labels fill themselves in the order songs actually go: Intro, Verse 1, Chorus, Bridge. Nudge any boundary by a tenth of a second until it sits on the downbeat.
Every section gets a number, printed right on its button. Press it and playback lands there instantly. No scrubbing, no "wait, where does it start", no eight people finding the spot separately.
Land on the section that keeps falling apart and loop it. Tight, clean repeats: run the transition ten times in a row until the band owns it, then switch it off and move on.
The feature no looper has, and the reason for the name. Arm it, and every jump clicks the band in first: four beats at your tempo before the music starts. Nobody scrambles in half a bar late.
The song is in B flat and nobody can reach the top note. Shift the whole track up or down by semitones, right in the video, and the tempo does not move an inch. Tell it the song's key once (or let it work the key out by ear) and it stops talking in semitones and starts saying G to A.
You mark the song, everyone plays from it. Copy a share code, drop it in the group chat: every musician who opens that video sees your exact sections. Same labels. Same spots. Same buttons. Same key, too, if you moved it.
One key and the page goes dark: comments, sidebar, recommendations, gone. Only the video and your section buttons stay lit. On the rehearsal screen there is nothing to look at but the music.
Every other looper was built for one person, alone, with headphones. Intro234 was built for the moment a leader says "verse two," the drummer hears four clicks, and eight people land on the one — together.
From "here's the song" to "everyone has the map" before the drummer finishes setting up.
Not yet. Intro234 runs on the YouTube watch page in desktop Chrome. Mobile browsers don't run extensions the same way, so for rehearsals, run it on the laptop driving your screen or PA.
No. It never downloads or copies anything. It reads the playback time of the video already open in your browser and adds section buttons around it. You stay entirely inside YouTube.
In your browser, on your machine. Nothing is uploaded anywhere. When you share a map, you copy a code and send it yourself; that's the only time it leaves your computer.
It plays through whatever your computer plays through. Route the laptop into your rehearsal system and the four-beat count comes through with the track, so the whole band hears the same lead-in.
No. The tempo stays exactly where it was, only the pitch moves, so the band still plays at song speed. A semitone or two sounds clean; push it a long way and you'll start to hear some artefacting, which is true of any real-time pitch shifting. If you'd rather not have it at all, leave it on the original key and nothing is touched.
It can listen to about twenty seconds of the song and work it out by ear. It's right most of the time, and when it isn't confident it says so rather than guessing, because a wrong key is worse than no key. Your chord chart is still the most reliable source, so you can just pick the key yourself from the menu and it will trust you over its own ears.
Yes. Marking, jumping, looping, count-in, key shifting, sharing and focus mode are all free. No account, no trial clock, no locked features.