Music Box: Loop Studio

Make music by filtering, previewing and layering original beat loops in a 16-step sequencer.

Pick a vibe. Build your beat. Music Box is a pocket loop studio for your browser. Choose a genre and mood, find sounds that fit, and layer drums, bass, chords and melody into a beat that loops in perfect time. No music theory needed. FIND SOUNDS THAT FIT • 103 original loops across 7 genres: lo-fi, hip-hop, EDM, house, jazz, ambient and pop • Filter by genre, mood, sound type, tempo and key • Search the library by name or tag • "Great fit" badges tell you which sounds match your song's tempo and key, and explain why LISTEN, THEN ADD • Preview any loop with one click. While your song plays, the preview joins in time and in key • Match key automatically shifts melodic loops so everything sounds right together • The first sound you add sets the tempo for you MIX IT YOUR WAY • Up to 8 tracks on a 16-step sequencer with a live playhead • Switch steps on and off, mute, solo, adjust the volume and reorder tracks • Change the tempo from 50 to 180 BPM while the beat keeps playing • Gapless, drift-free looping START FAST, KEEP YOUR WORK • 8 ready-made starter songs to play with or build on • Your song saves automatically; keep named copies in "My songs" • Open the full-page studio for a bigger view that keeps playing in the background PRIVATE BY DESIGN • No account, no ads, no tracking • All sounds are generated in your browser, with no downloads and no network requests • Your songs are stored only on your device Tip: sound stops when the toolbar popup closes. Click ⤢ to open the full studio in a tab for longer sessions.