Hotkeys: Space play/pause, [ set A, ] set B, L loop on/off.
🎵 Record Tab Audio: capture sound from another browser tab — online lessons, backing tracks, practice videos, your own recordings — and slow it down, loop it and change the pitch right here. Please only record audio you have the right to use.
Perfect for learning guitar, piano, bass, drums, violin, or any instrument!
100% Free — No Catch
Paid tools like Amazing Slow Downer charge $50+. Music Slow Downer gives you everything they do — and more — at no cost:
- ✅ Slow down or speed up audio without changing pitch
- ✅ Pitch shift ±12 semitones
- ✅ A/B loop any section & save loop presets
- ✅ Export loops as WAV at your chosen speed & pitch
- ✅ Frequency isolation — hear just bass, guitar, vocals or drums
- ✅ Record audio directly from any browser tab
- ✅ No download, no account, no subscription
Made by one guitarist, not a company. Read why it's free →
Hi, I'm Andrew — a software engineer and guitarist. I built this in my spare time and keep it free because musicians rarely have cash to spare. If it's helped you learn something and you can spare a coffee, it helps with the upkeep. If not, that's fine too.
☕ Buy me a coffee Why it's free →Frequently Asked Questions
How do I slow down a song without changing its pitch?
Load your audio file, then drag the Speed slider down to anywhere from 0.25× to 1.5×. Music Slow Downer uses pitch-preserving time-stretching, so the song plays slower while staying in the same key.
Is Music Slow Downer free to use?
Yes — it's 100% free with no account, no download, and no subscription. It runs entirely in your browser and is supported by non-intrusive ads.
Can I practise with audio that's playing in another browser tab?
Yes. On desktop Chrome or Edge, the Record Tab Audio feature captures sound from another browser tab — an online lesson, a backing track, your own uploaded recording — so you can slow it down, change the pitch and loop it just like a local file. Only record audio you have the right to use.
Do I need to install anything or upload my files?
No. Everything runs in your browser and your audio never leaves your device — nothing is uploaded to a server. There's nothing to install and no sign-up required.
Can I loop a section of a song to practice it?
Yes. Set an A marker and a B marker to loop any section, save loops as presets, and export a looped section as a WAV file at your chosen speed and pitch for offline practice.
What instruments can I practice with it?
Any instrument — guitar, piano, bass, drums, violin, saxophone and more. Frequency isolation presets even let you hear just the bass, guitar, vocals, or drums to learn a part faster.
Practice Guides
Step-by-step guides to getting the most out of slowed-down practice:
All practice tips →