Intro234 - turns any YouTube song into labelled sections

Rehearsal sections for YouTube. Mark any song into sections, jump, loop, count the band in, and share one map with your band.

Your band rehearses off YouTube. Someone says "take it from the bridge" and everyone scrubs the timeline hunting for the spot. Intro234 fixes that. Mark any YouTube song into labelled sections once, then get to any of them instantly: jump, loop, change the key, and count the whole band in together. Share one map so everyone rehearses from the same buttons, in the same key. MARK A SONG IN ONE PASS Play the track and tap Alt+M at each 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 lands on the downbeat, or rename anything to match your chart. JUMP TO ANY SECTION Every section gets a number. Press Alt+1 through Alt+9 and playback lands there instantly. No scrubbing, no hunting for where the chorus starts. LOOP THE HARD PART Land on the section that keeps falling apart and press Alt+L to loop it: tight, clean repeats until the band owns the transition. COUNT THE BAND IN The feature no looper has. Arm count-in with Alt+C and every jump plays four click beats at your tempo before the music starts, so the whole band comes in together instead of scrambling. PUT IT IN YOUR SINGER'S KEY The song is in B flat and nobody can reach the top note. Shift the whole track up or down by semitones with Alt+Shift+Up and Alt+Shift+Down, and the tempo does not move an inch. Tell it the song's key once and it stops talking in semitones and starts saying "G to A", or let it work the key out by ear from about twenty seconds of the song. When it isn't sure, it says so instead of guessing. PIN A NOTE ANYWHERE IN THE SONG Not everything worth remembering happens at a section boundary. Press Alt+N to pin a cue at an exact moment, "watch the stop", "half-time feel", whatever the band needs. It flashes on screen a few seconds before that moment arrives, so you see it just in time rather than just after. REHEARSE IN YOUR OWN ORDER Some nights you work the hard parts first. Drag any section chip anywhere in the row to build your own practice order: Bridge, Interlude, Chorus, Verse, whatever the rehearsal needs. Timestamps never change, only where things sit in the row, and the jump keys follow your new order. One click puts it back in song order. SHARE ONE MAP WITH YOUR BAND Copy a share code and drop it in your band's group chat. It arrives readable, with the song name and section count right there, so everyone knows what it is before they import it. Every musician who imports it on that same video gets your exact sections, your pinned notes, your practice order, and your key. THE VIDEO GLOWS WITH THE SONG A soft colored glow around the video matches whatever section is playing: amber for the chorus, purple for the bridge. Brighter in Focus mode, so the screen becomes a stage light cued to the arrangement. Off with one toggle if it isn't for you. FOCUS MODE Press Alt+F and the page goes dark, comments, sidebar, recommendations gone, leaving only the video and your section buttons on the rehearsal screen. OUT OF THE WAY EVERYWHERE ELSE On any video you haven't marked, Intro234 stays a small tab under the player instead of a toolbar, and in full screen it fades out with YouTube's own controls. Hit Alt+M and it appears the moment you actually want it. PRIVATE BY DESIGN No account. No sign-up. No tracking. Your section maps live in your browser and never leave your computer unless you share a code yourself. Works on the YouTube watch page in desktop Chrome. Created by Sherman Jackson · PremadePixels.com Key shifting uses SoundTouchJS (LGPL 2.1) by Olli Parviainen.