Draw on the grid
Choose Draw to create notes or Select to move and resize them. Shape velocities in the lane, copy/paste patterns, or edit exact values in the inspector.
◆ THE PIXELOKAY MUSIC WORKSPACE
MIDI Editor & Piano Roll
Compose with a precision piano roll. Shape notes, velocity and instruments, then hear the arrangement and export real MIDI files — all in your browser.
✦ Multi-track editor✦ MIDI import & export✦ No uploads
01 / CREATE & EDIT
MIDI studio
Edit notes on the grid, preview with the browser synth, or open an existing MIDI file.
Local draft
Reading MIDI file…
1 : 1 : 008 bars · 0:16
PIANO ROLL
Piano · Click to draw notes
Active track Other tracksOn touch, use Pan to scroll · Select/Draw to edit
Pitch ↑ ↓Time → · Scroll horizontally for later bars
Velocity lane Drag a bar to adjust note velocity · 1–127
Select a note or drag a velocity barNOTE INSPECTOR
Selected notes 0
Click a note to inspect it, or draw one on the grid. Keyboard users can select notes in the table below.
Keyboard-accessible note list
| Note | Start | Length | Velocity | Action |
|---|
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02 / HOW IT WORKS
A studio for ideas, practice and MIDI sketches.
Shape the arrangement
Build up to 12 tracks, choose General MIDI programs, set the tempo and customize velocity for each note.
Bring it to your DAW
Export a Standard MIDI File containing editable notes, program numbers and tempo events. MIDI stores musical instructions, not audio.
Frequently asked questions
Does this upload MIDI files anywhere?
No. MIDI and JSON files are read locally in your browser. The editor has no file-upload endpoint. An optional local recovery draft is saved only in this browser's storage.
Is browser playback a professional General MIDI soundfont?
No. This lightweight Web Audio preview provides simple synthesized sounds for checking pitch, rhythm and arrangement. Exported instrument program values are preserved for use with your DAW or soundfont player.
What MIDI files can I import?
Standard MIDI File formats 0 and 1 with PPQ timing. Format 2 and SMPTE time division aren't supported. Notes, tempo events, drum-channel flags, track names and basic instrument assignments are imported. Controllers, automation, SysEx and other unsupported events are reported as omissions rather than preserved.
Will imported tempo changes be lost?
Imported tempo changes are retained for playback and MIDI export. Manually setting a single BPM asks before replacing the tempo map. Time-signature changes within a song are not currently retained.