Sketch notes quickly
Place melodies, chords, bass movement, or rhythmic ideas without opening a full production session.
MIDI Editor
Compose and edit MIDI notes
Visual note editing
A browser MIDI editor for turning rough notes into usable musical parts.
Use the piano roll as a focused place to compose, correct, and understand MIDI. It keeps note pitch, timing, velocity, and phrase shape visible, so you can move from a quick idea to a part that is ready for production or practice.
Piano-roll workflow
Melody and chord editing
Works after audio-to-MIDI
Shape timing and feel
Move notes, stretch phrases, refine velocity, and tighten rhythm until the part feels intentional.
Carry the idea forward
Use MIDI as a portable bridge between recording, songwriting, arrangement, learning, and DAW production.
Editing tips
Make MIDI musical, not just correct
Fix note boundaries first
Start by cleaning starts, endings, and accidental overlaps so the phrase plays clearly.
Use velocity for expression
Small velocity changes can make a simple pattern feel performed rather than programmed.
Compare with the source idea
When editing converted MIDI, keep the audio memory nearby and preserve the phrase that made the idea work.
Audio-to-MIDI handoff
Clean up converted audio instead of starting over.
If a melody began as audio, convert it first, then open the result here. The editor lets you fix extra notes, align timing, and reshape the phrase while keeping the original musical idea intact.
Convert audio to MIDISongwriters
Capture hooks
Turn a melody sketch into notes you can revisit, transpose, and develop into a full song.
Producers
Test parts fast
Draft bass lines, chord movement, counter-melodies, and transitions before committing them to an arrangement.
Learners
Study structure
See pitch, timing, and note length visually so practice material is easier to understand and adjust.
FAQ
MIDI Editor Questions
What is an online MIDI editor?+
An online MIDI editor is a browser workspace for creating and changing MIDI note data. You can use it to write melodies, edit chords, adjust rhythm, and prepare musical ideas for other tools.
Can I edit audio-to-MIDI results here?+
Yes. After converting audio to MIDI, open the result in the editor to correct note timing, remove unwanted notes, and shape the musical phrase before exporting or producing.
Do I need a DAW to edit MIDI?+
No. This editor runs in the browser, so it is useful for quick note edits, learning, and early writing before you move into a full production setup.
Who is this MIDI editor for?+
It is useful for songwriters, producers, beat makers, music students, teachers, and collaborators who want a visual way to shape musical ideas.
Open the editor and shape the next idea.
Jump back to the piano roll whenever you need a clean place to test a part, fix a rhythm, or polish converted MIDI.
Back to editor