● Tempo changer
Slow it down or speed it up — your call on pitch
Change tempo from 0.5× to 1.5× with a live BPM readout. Tape mode lets the pitch follow, like a turntable; Keep-pitch mode holds the key steady for practice and transcription.
Drop your song here
MP3, WAV, FLAC, M4A, OGG or a video file · stays on your device
No sign-up. No upload. Free.How to
Speed changer: three steps.
Open audio
We detect the tempo (BPM) automatically.
Choose a mode
Tape for the slowed/sped-up sound, Keep pitch for learning parts at a slower tempo.
Export
MP3 or WAV of the whole song or just a selection.
One-click starting points
Useful speeds
Each link opens the studio with these exact settings. Drop your song in and adjust from there.
Then make the video
Turn it into something to post.
When the sound is right, switch to Video. Pick a scene, add your artwork and title, and export a 1080p MP4 sized for TikTok, Reels, Shorts or YouTube.
- Eight audio-reactive scenes
- 9:16, 4:5, 1:1 and 16:9
- Rendered on your device — no queue, no upload
FAQ
Questions about the speed changer.
How do I slow down a song without changing the pitch?
Select “Keep pitch” under Speed & pitch, then lower Speed. Our pitch engine compensates in real time so the key stays put.
What’s the BPM after I change speed?
Shown live under the waveform: original BPM → new BPM.
Can I loop a difficult section?
Yes. Drag to select it on the waveform and turn on Loop (L).