Learn dance from YouTube in slow motion
Paste any dance practice video or tutorial into Stairway2Fast and it becomes a rehearsal room: drag two handles around one 8-count, slow it to 0.5× — the music keeps its pitch, so the counts still feel like the song — and it repeats while you drill it. Free, in your browser, no signup.
▶ Try it live — no signup opens a dance practice video in the player
How it works
- Paste a YouTube link. Dance practice videos, mirrored tutorials, class recaps, fancams — if it plays on YouTube, it loops here, through YouTube's own player.
- Frame one section. Two handles on the timeline mark the exact moment — the dance break, the transition you keep fudging, the footwork that goes by too fast to see. The loop holds while you run it.
- Slow it down. 0.25×–2× in steps. At 0.5× you can actually see the pathway of an arm or the weight shift under a turn. Climb back up one notch at a time as it gets clean.
The part other loopers don't do: it remembers
Any speed-changer can slow a video down — and then forget you were ever there. Close the tab, and tomorrow you're scrubbing to re-find the dance break and guessing what speed you'd worked up to.
Stairway2Fast keeps the record. Every video remembers its loops — name them ("intro", "verse 2", "dance break") and the whole routine becomes a menu: one tap puts you back on a section at the speed you left off. Every minute of practice logs itself against the video and the section, so after a couple of weeks you can see the thing that keeps you coming back: the day the chorus finally held together at full tempo after a week at 0.7×. Streaks, daily goals, a practice history — earned, not typed in.
Choreography tips
- Chunk in 8-counts. Don't loop the chorus; loop one 8, get it into your body, then loop the next. Join them only when each one runs clean on its own. The handles go down to fractions of a second, so "counts 5–8 only" is a legitimate loop.
- Mark before you go full-out. Run the loop at 0.5× just marking — small, low-energy, watching the video — until the sequence is in your head. Then bring the energy and start climbing the speed.
- Name a loop per section of the routine. "Intro", "verse", "pre-chorus", "dance break", "ending" — saved once, each section is one tap away for the rest of the month, at its own remembered speed.
- Mind the mirror. Many dance practice videos are already mirrored for learners; if yours isn't, learning in small slowed chunks makes the left–right translation much easier to hold onto.
- Climb in notches, not leaps. 0.5× → 0.6× → 0.75× → 0.85× → full. If a notch falls apart, drop back one and run it clean twice before trying again.
Free vs Pro, honestly
Everything above — looping, slow motion, named loops, all the practice tracking — is free, with no account — and so is uploading your own footage (class recordings, rehearsal videos); it stays on the device you added it on. Sign up (also free) and your library and history sync across devices. Pro (£4.99/$6 per month) adds cloud sync so your own footage follows you to every device you practise with.
FAQ
Does the music sound strange slowed down?
It sounds slower, not lower. Playback uses pitch-preserving time-stretch, so the track keeps its pitch at 0.5× — the counts and the feel of the song stay recognisable instead of turning into a smear.
Do I need an account?
No. Open the app and practise as a guest — loops, speeds, and history are kept in your browser. Create a free account when you want it synced across devices; everything migrates automatically.
Is this allowed by YouTube?
Yes. The video plays in YouTube's own embedded player, and speed/loop control uses YouTube's public, documented player API. Nothing is downloaded, ripped, or re-hosted.
Does it work on a phone or tablet?
Yes — it's a web app, so it runs in the browser on a tablet or phone as well as a laptop. A tablet propped up at the front of the room works well for run-throughs.
Can it slow down any dance video?
Any video that allows embedding (nearly all dance practice videos and tutorials do). If a channel has disabled embeds, YouTube blocks playback outside youtube.com — no tool can change that.
Get the dance break into your body. Frame one 8-count, slow it to half speed, and climb back to tempo — with the record to prove it.