JSON Sequencer

Music Maker

Paste a tune idea as JSON, drop a file, or sketch directly on the grid. The app turns it into a playable pattern with melody, drums, and switchable instruments.

Deployed via InstaVM

Accepted JSON

{
  "title": "Neon Steps",
  "tempo": 120,
  "steps": 8,
  "instrument": "piano",
  "notes": [{ "step": 0, "note": "G4", "length": 2 }],
  "drums": [{ "step": 2, "lane": "kick" }]
}

Live Pattern

Music Maker Demo

120 BPM 8 steps Click cells to edit

Melody Instrument

Change the whole tune on the next loop

Live instrument: Pulse Synth
Pitch
Drums Kick / Snare / Hat

Demo loaded. You can press Play immediately or paste your own JSON.