Which file formats are supported?
Slomo handles .wav, .aiff, .mp3, .aac, .m4a, .m4b and .caf-files. Currently no .ogg, no .flac.
Slomo
🥁 Learn songs by ear 🎸
Slow it down.
Solo your part.
Learn the riff.
Slomo is a focused Mac app for musicians who learn by listening. Slow down any song, loop the hard parts, and now — separate instruments and detect chords with on-device AI.
No subscription. No cloud. All yours.
Features
Hear your instrument,
or the mix
Beyond filtering
Slomo's AI stem analysis separates your song — vocals, guitars, bass, drums — right on your Mac within seconds. No uploading to a server. No credits. No fuzz.
We call it Cheat Mode
Solo the bass line to catch every note. Mute the vocals to play along with the band. Or isolate the guitar to hear exactly what's being played — without the rest of the mix getting in the way.
Stop guessing.
Start playing.
Show Chords
Toggle chords per song, so you spend less time guessing and more time playing.
Edit Chords
All Chords are editable, so you can refine what you hear. Your ear gets better every time.
We call it Beta
We are honest: the technology gets ~80% of songs right today. The other 20%? That's where your ears take over.
See what you hear
Jump to the hard part instantly
Use the waveform overview to jump through a track quickly, then zoom in to place loops with precision. Keyboard shortcuts give you fast control over playback, speed and loops without slowing down your practice.
Save every section worth repeating
Create multiple loops for intros, riffs, solos or transitions. All saved automatically with the song. Open the track again and your saved loop markers are ready for the next session.
Library & Playlists
Stop hunting for files. Start playing.
Add your songs from your local music library and create custom playlists. Group them by what you're working on — the jazz standard, the covers set.
Drag & drop tracks straight from the library or add the song you're listening to.
And get straight to practice.
Native mac OS. Built for Apple Silicon.
Zero bloat: pay once, keep it.
Built for musicians. Built for your progress.
Intuitive controls for fluffy practice sessions.
Keyboard Shortcuts
-
Play/Pause
SPACE
-
Return play position
↩︎
-
Speed up/down
↑ or ↓
-
Move cursor
← or →
-
Scroll waveform
Scroll Wheel or Trackpad L/R
-
Zoom into waveform
⇧ + Wheel or Pinch Gesture
-
Add loop
⌘ + A
-
Remove loop
⌘ + R
-
Remove All loops
⌥ + ⌘ + R
-
Next loop
⌘ + →
-
Last loop
⌘ + ←
-
Shift loop selection left
⌥ + ←
-
Shift loop selection right
⌥ + →
-
Set loop start / end on the go
L
FAQ
I cannot drag a song onto the app from iTunes
Be sure to use your local library. Tracks from an iTunes server or another computer's library can't be dragged anywhere.
Nope, I just can't open that song
It may be copy-protected, which Slomo does not support. This is uncommon today, but it can still happen with some purchased files.
Why is there only one track regardless of stereo or mono files?
The waveform shows the left channel in the upper half and the right channel in the lower half of the view.
I've found a bug. Shall I rate the app with one star?
Found a bug? Please contact us first — we actually read every message. And we fix fast.
I love Slomo. How can I spread the word?
If you enjoy our first application, make us happy by rating Slomo in the Mac App Store and tell your music loving friends about us.
Thanks!