Your tracks,
finally understood.
MUSJC reads the BPM, the key, and the waveform of every track in your library automatically — then hands you a real EQ to shape what you hear. No cloud, no account, no subscription.
Your library lives on your machine — not someone else's server.
Free to use. No tiers, no trial that expires, no upsell.
One player, built the same way for Windows (macOS and Linux coming soon)
It listens before you do.
Every mainstream player treats your library as a flat list of files to press play on. MUSJC actually analyzes what's in it.
BPM Detection
Automatic BPM detection for every track in your library — drop in 200 reference files and get the tempo of all of them, no tapping along required.
Key Detection
DETECTED
Automatic musical key detection — a full signature, not just "in tune." Know what you're working with before it's in a session.
Background Library Analysis
Your whole library gets analyzed in the background with a live progress readout — and if one track needs a second pass, re-analyze it with one click.
10-Band Parametric EQ
32Hz to 16kHz across ten bands, with presets built in — and it's live-linked to whatever song you're actually viewing, not a global setting buried in a menu.
Real-Time Waveform
See the waveform as it plays and click anywhere to seek. It's in the main player bar — and it's there full-screen too, blown up behind the artwork.
"Play/pause" was never the whole job.
Spotify, iTunes, VLC, foobar2000 — every mainstream player treats your library as a flat list of files. None of them know what key your tracks are in, what BPM they run at, or let you shape the sound with a real EQ tied to what you're actually listening to.
| Feature | Mainstream players | MUSJC |
|---|---|---|
| Tempo (BPM) | Not shown | Detected automatically, every track |
| Musical key | Not shown | Full key signature, every track |
| Equalizer | Basic, or none | 10-band parametric, live-linked |
| Waveform | Not shown | Real-time, click-to-seek, full-screen |
| Library model | Streamed / flat file list | Analyzed and organized |
| Account required | Usually | No — local-first |
| Subscription | Often | Never |
Built for producers, DJs, and anyone who thinks about music in more than play and pause.
A proper player underneath it all.
The analysis is the headline — but MUSJC is still, first, a music player. It's fast, it's organized, and it stays out of your way.
Playback
- Full-screen "now playing" view with large artwork and waveform
- Compact mini-player mode, always-on-top option
- Pitch-locked variable playback speed
- Drag-and-drop file import
- Synced lyrics support
Library
- Fast fuzzy search across your whole collection
- Playlists, favorites, artists, albums, genres
- Listening history and stats tracking
- Export/import of your app data and settings
Look & Feel
- Sleek dark theme with a custom teal accent
- Dynamic UI theming that pulls from album artwork
- Custom, fully rebindable keyboard shortcuts
System Integration
- Runs quietly in the system tray — closing the window keeps it running, with a proper Exit in the tray menu
- Launch-on-startup option
- Custom native title bar and window chrome
Free. Local. Yours.
No account to create, no card to enter. Pick your platform.