Drum sequencer.

Program a beat in your browser on a 16-step grid. Tap the grid, hear it loop, drop your own sounds on any row. Share the beat as a link, download it as WAV or MIDI.

Space
Open hat
Hat
Tom
Rim
Clap
Snare
808
Kick

Drop a WAV, AIFF or MP3 on a row to play your own sound.

Want a sound from a song or a video? DOT records anything your Mac plays; drop it on a row and take the beat to your DAW as MIDI.

How to make a beat

Each row is a sound and each square is a sixteenth of a bar. Tap a square to turn a hit on, tap it again to turn it off. Press play and the bar loops. Most beats start the same way: a kick on 1 and 3, a snare on 2 and 4, hats on every other square, then one hit moved somewhere it doesn't belong. The grid is the same sixteen sounds as the drum pad, so what you played there you can program here.

Tempo runs from 40 to 240, like the metronome, and swing pushes every second sixteenth late, from straight to a shuffle. One bar is a tab; press Add bar for a second, up to four, and the loop plays through all of them.

Share it as a link

Press Copy link and you get a link with the whole beat in it: the pattern, the tempo and the swing. Send it, and whoever opens it hears your beat and can change it, without touching yours. There's nothing to save and no account. The link doesn't carry your own sounds, so a beat built on them plays with the standard kit for other people.

Download WAV or MIDI

WAV gives you the beat as built, all its bars, played once and cut so it loops seamlessly, at the exact tempo and starting on beat one, so it drops into a project without trimming. MIDI gives you the hits as notes, one note per row on the standard drum map, so you can play them with any drum kit in your DAW and keep editing there.

Your own sounds

Drop a sound on any row and the row plays it: a snare you recorded, a door, a word. The sound is saved in this browser, so it's there next time you open the page. If the sound is on your Mac but not in a file, DOT records whatever your Mac plays and gives you the file in one click: plastic.audio/dot.

The sound you want is in a song you’re playing.

DOT records anything your Mac plays, trims it, and gives you the file to drop on a row.

DOT Audio Recorder

Free to try · $49 once · macOS 14.4 or later

Questions.

How long can a beat be?

Up to four bars of sixteen steps each. A one-bar loop is plenty for most ideas; the extra bars are for a fill or a turnaround.

What is in the MIDI file?

One note per hit, on the General MIDI drum map (kick on C1, snare on D1, closed hat on F♯1 and so on), at the tempo you set, with the swing written into the note positions. Open it in any DAW and pick any drum kit.

Can I use my own sounds in the export?

In the WAV, yes: it's a recording of what you hear. In the MIDI, no: MIDI carries notes, not audio, so your DAW plays them with its own kit.

Does it work on a phone?

Yes. Tap the squares; on a phone the grid shows half a bar at a time and follows the beat as it plays. Dropping in your own sounds needs a file picker, which phones have, but it's easier on a computer.

Why does the beat change when I open a shared link on my phone?

It doesn't; the pattern is the same. If the beat was built on someone's own sounds, you hear it with the standard kit, because the link doesn't carry sound files.

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