Suno MIDI cleanup guide: a practical checklist

Understand what the export contains

A generated MIDI export may separate a hook into several tracks, merge parts that should be separate, or contain notes that do not match the audio you heard. It may also carry a tempo map that was inferred rather than authored. Treat the file as a draft until you have inspected it.

EditMIDI does not sign in to Suno or fetch a private project. Use a MIDI export available to your account or another authorized conversion workflow, then open the resulting .mid here. The tool cleans the file you provide.

Check the track layout first

Read the track names, channels, programs, and note counts. A hook split across three tracks may need to stay split, or it may be easier to merge and edit as one part. A track with a program number that does not match the intended instrument is a routing problem, not a timing problem.

Mute or solo tracks to hear what each lane contributes. If two tracks contain the same notes, decide which one to keep before quantizing. Cleaning a duplicate part doubles the work and can make the result sound louder than intended.

Fix notes before timing

Delete obvious false notes, move octave errors, and resize notes that end too early or too late. If the export contains a chord where the audio has a single line, remove the extra notes rather than trying to hide them with velocity. Quantize cannot correct a wrong pitch.

Work in short loops and compare with the original audio when you have it. The goal is a file that represents the musical idea, not a file that merely has fewer visible mistakes. If the transcription is fundamentally wrong, start from a cleaner source or a different export.

Quantize to a musical grid

Choose the grid that matches the phrasing: quarter notes for simple material, eighth notes for common pop, sixteenth notes for faster detail. The cleanup tool can quantize the whole file and set every positive note-on velocity in one undoable operation.

A cleanup pass is intentionally blunt, so compare the result with the original feel. If the phrase becomes too rigid, use a small humanize pass afterward. If the timing was already good, quantizing can make it worse; use the smallest intervention that solves a real problem.

Set velocity and check the tempo map

A uniform velocity makes a generated export easier to audition but removes dynamics. Use it as a starting point, then shape the important notes in the full editor or with a velocity curve. Drum channel 10 may need a different treatment because velocity often changes sample selection.

Check the tempo map before you export. A generated file may contain several tempo points or a single value that does not match the audio. If the timing drifts, the tempo map is a more likely cause than the note grid. Fix the map or replace it deliberately.

Export, audition, and keep the original

Run the file checker, download a new .mid, and import it into the DAW that will use it. Assign your own instruments, compare the result with the original audio, and confirm that the track order and channels make sense. Keep the original export for reference.

A cleaned MIDI is a blueprint, not a copy of the generated mix. It will not reproduce the effects, vocals, or sound design of the original. Use it as editable scaffolding for your own arrangement, and judge the result by what it lets you create.

What to change after the cleanup pass

Assign your own instruments, set the track levels, and decide which generated parts are worth keeping. A cleaned file with the wrong instrumentation is still not a finished arrangement. The cleanup removes obvious friction; the production decisions remain yours.

If a part still sounds wrong, go back to the source audio and compare the phrase. The export may have missed a note or invented one. Correct that in the piano roll before you spend time mixing. It is easier to fix a note than to mix around a wrong one.

• Re-instrument the tracks in the destination DAW.
• Compare the cleaned notes with the source phrase.
• Fix wrong notes before mixing or adding effects.

A final quality gate

Before calling the file clean, check the first note, the busiest section, and the ending. The first note catches a missing pickup; the busy section reveals duplicate or false notes; the ending catches a tempo or length problem. Listen once without looking at the piano roll.

Then open the file in the DAW and play it with the intended instruments. A cleanup that only looks correct is not finished. The file is ready when the notes, timing, and routing make sense in the environment where the music will actually be made.

• Check the first note, the busiest section, and the ending.
• Listen once without looking at the piano roll.
• Confirm the result with the intended instruments.