Pocket Groove
A rhythm section that listens.

Bring a song as audio or a MIDI arrangement of up to 256 bars, or try a demo, and Pocket Groove writes kick, snare, hats, cymbals and bass that follow it. Shape the groove, lock the parts you like, compare Straight with In the pocket timing, then open everything in the piano roll to edit and export. Everything runs in your browser.

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Pocket Groove showing drum and bass lanes generated for a chord progression

How it works

From your arrangement to a groove to editable MIDI.

Give it your songImport an audio file (WAV, MP3 and more) or a .mid file with the whole arrangement, or try a demo song. Tempo, bars, chords and accents are read for you, and the bass follows the chord in each bar.
Shape the groovePress Generate groove, then pick a starting character, groove style, density, swing and fills. Lock a lane to keep it while you try new ideas for the rest.
Open it in the piano rollOpen the groove in the studio to edit notes, choose sounds and export the MIDI file. Back to controls keeps your work.

Good to know

  • Straight puts every hit exactly on the beat; In the pocket nudges the same notes slightly early or late, like a real player.
  • Your own audio and MIDI stay on your device: nothing is uploaded.
  • The result is MIDI: drums on channel 10, bass on its own channel, and your source tracks kept as they were.