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MIDI Editor

Draft, refine, and export MIDI ideas from note events or converted melodies with an editor-ready workflow.

MIDI Editor

Open a MIDI file or start with an example. Edit notes, tracks, velocity and tempo, then export your work.

Standard MIDI files up to 5 MB.

Loading MIDI editor and instruments…

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Arrangement ideas to study before editing MIDI

Listen for note placement and dynamics in these audio examples, then use Load example above to open editable MIDI notes.

A MIDI editor and piano roll that opens in a browser tab

A piano roll that opens in a browser tab

Note pitch, length, position and velocity, editable without installing a DAW - which is the difference between fixing a wrong note now and waiting to get back to the studio.

When you have no MIDI yet

Start at the MIDI generator or audio to MIDI - this page edits notes, it does not write them.

How MIDI Editor works

Edit MIDI in the browser in three steps

1

Start a draft or bring one in

Open a blank piano roll, or start from MIDI produced elsewhere on Aimusicis.

2

Edit the notes directly

Change pitch, length, position and velocity in the browser without installing a DAW.

3

Export the file

Take the MIDI out to any sequencer, notation app or hardware instrument that reads it.

A piano roll with nothing to install

4 note properties editable

Pitch, length, position, velocity.

0 software

Nothing to install before you can fix a wrong note.

1 MIDI file

One MIDI file in, one MIDI file out - any sequencer will take it.

128 General MIDI programs

Audition notes with the factory instrument library or load your own SoundFont.

MIDI Editor features

Open a MIDI file in the browser piano roll, adjust notes and tempo, and audition the arrangement with a built-in or custom SoundFont.

Beat producer tapping a drum pad controller for a new genre idea

Four note properties

Pitch, length, position and velocity - the four things a piano roll needs to fix a wrong note.

One MIDI file in, one out

Export standard MIDI with editable notes and instrument settings, ready to continue in your sequencer.

Who edits MIDI without a DAW

Producers without a DAW open

Fix a wrong note on a phone or a borrowed laptop instead of waiting to get back to the studio.

Music teachers

Show a student what changing one note in a phrase does, immediately.

Hobbyists learning the piano roll

Learn how MIDI editing works before committing to a full DAW.

Where MIDI Editor results go next

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MIDI editing questions

Answers for creators comparing MIDI Editor, AI music generators, editing tools, and royalty-aware publishing workflows.

Open a piano roll in a browser tab

Edit notes without installing anything or opening a DAW.

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