Audio to MIDI Converter
Turn a melody, a sung line or one instrument from a song into MIDI notes — with a piano roll to read them and a piano preview to hear them. Free, with no sign-in needed.
Drop audio to get the notes
MP3, WAV, M4A, FLAC… up to 40 MB
…or click anywhere in this box to browse files
How to Convert Audio to MIDI
Three steps from a recording to notes you can edit.
Pick What to Transcribe
Keep “As recorded” for a solo instrument, humming or one melody. For a full song, choose vocals, piano, guitar or bass — that part is isolated first.
Drop Your Audio
MP3, WAV, M4A or FLAC. The notes are detected on our servers — pitch, timing and loudness of each one.
Check, Then Download
Play the piano preview while the piano roll follows along, then download the MIDI file or copy the note names.
More Than a MIDI File
See the notes, hear them, take them with you.
A Real MIDI File
A standard .mid with every detected note — pitch, start, length and how hard it was played. It opens in any DAW or notation app.
Pick the Part From a Song
Full mix? Choose vocals, piano, guitar or bass and that part is separated from the song first, so the notes come from one instrument, not five.
A Piano Roll You Can Read
See the notes laid out by pitch and time, with a playhead that follows along and a strip of the whole file to jump anywhere.
Hear the Transcription
The notes are played back on piano, so you can check by ear what was caught and what wasn’t before you download.
Copy the Note Names
One click puts the notes on your clipboard in order — C4 E4 G4 … — for a lesson, a chat message or a quick tab.
Keep Going in the Studio
Ask Noty, the AI agent in the Notevibes Studio, to play the melody on another instrument, separate the stems or tune the vocal.
Hear Your Melody on Any Instrument
The piano preview is one instrument. In the Notevibes Studio you just ask Noty, the AI agent, for the rest — “play this melody on strings”, “separate the stems”, “tune the vocal” — and it does it on your audio.
What You Can Do With Song to Notes
A recording in, notes you can work with out.
Hummed Ideas
Hum or sing a melody into your phone and turn it into notes you can build on
Learning a Part
See the notes of a vocal line or a riff instead of hunting for them by ear
Writing It Down
Open the MIDI in a notation app as a first draft of the score
Re-voicing a Melody
Put a sung line onto a synth, strings or piano in your DAW
Basslines and Riffs
Pull a bassline or guitar riff out of a song as MIDI to study or rework
Remixes and Covers
Get the hook of a song as MIDI to re-harmonize, re-arrange or rebuild
From a Recording to Notes You Can Edit
An audio file is sound; a MIDI file is instructions — which note, when, for how long, how loud. Converting audio to MIDI means listening to the sound and writing those instructions back out. Once a melody is MIDI you can change its instrument, fix a wrong note, transpose it, slow it down without artifacts, or print it as notation. That is what this converter does: drop an MP3 or WAV, and the notes come back as a .mid you can open anywhere.
What converts cleanly — and what doesn’t
Melody to MIDI works best on one line at a time: a sung or hummed tune, a whistle, a solo flute or violin, a single guitar riff, a bassline. Those come out close to what was played. Dense chords and full mixes are harder — when a piano, a guitar and a voice all sound at once, their notes and overtones overlap, and the result is an approximate sketch with extra and missing notes. Drums are not transcribed at all; the converter listens for pitched notes. If you’re not sure which note a single sound is, the note identifier names it live from your microphone.
MP3 to MIDI from a full song
For a finished song, don’t transcribe the whole mix — pick the part. Choose Vocals, Piano, Guitar or Bass and the converter first separates that instrument from the song with the same AI separation as the stem splitter, then turns only that part into notes. A sung lead or a bassline usually transcribes well this way; a piano part playing full chords will still be approximate. Want to hear the isolated part on its own first? The piano extractor gives you the piano as audio.
MIDI, not sheet music
The result is MIDI notes, not a printed score. To see it as notation, open the .mid in MuseScore; to edit it and play it back on any sound, drag it into GarageBand, Logic, FL Studio or Ableton. The notes follow the recording’s own timing rather than a bar grid, so quantize them in your editor if you want them locked to the beat — the BPM & key detector tells you the tempo and key to set first.
Check it by ear before you download
Every result comes with a piano preview of the notes that were found and a piano roll that scrolls page by page as it plays. Listen alongside your original: where the preview matches, the MIDI is right; where it wanders, those are the notes to fix. WAV to MIDI and MP3 to MIDI give the same notes — what matters is how clear the part is, not the file format.
Do the Rest by Asking
In the Notevibes Studio, Noty plays your melody on another instrument, separates the stems or tunes the vocal — you just say what you want.
Free to start · No credit card required
Related Audio Tools
More free AI audio tools from Notevibes — same engine, no sign-up.
Note Identifier
Sing or play a note and see its name instantly.
AI Piano Extractor
Isolate the piano from any song.
AI Stem Splitter
Split any song into vocals, drums, bass, and other.
BPM Detector
Find the BPM, key, and Camelot code of any song.
Pitch Detector
Read the live pitch of any sound — Hz, note, and cents.
Online Autotune
Pitch-correct a vocal to the classic hard-tune sound.
Audio to MIDI FAQ
How do I convert audio to MIDI?
Drop an MP3, WAV, M4A or FLAC file on this page. If it is a full song, pick the part you want — vocals, piano, guitar or bass — and that part is isolated first. You get the notes as a .mid file, a piano roll to look at, and a piano preview to check the transcription by ear.
What kind of audio works best?
One melodic line or one instrument: a sung or hummed melody, a whistled tune, a solo piano or guitar part, a bassline. Dense chords and full mixes come out approximate — expect extra and missing notes — so for a song, pick the part to transcribe rather than “As recorded”. Drums are not transcribed.
Can I convert an MP3 of a full song to MIDI?
Yes — choose Vocals, Piano, Guitar or Bass and the converter separates that part from the mix before transcribing it. That gives a much cleaner result than transcribing the whole mix, where every instrument’s notes land on top of each other.
Do I get sheet music?
You get MIDI notes, not a printed score. Open the .mid in MuseScore to see it as notation, or in GarageBand, Logic, FL Studio or Ableton to edit it and play it on any instrument. The timing follows the recording as played, so quantize it in your editor if you want it locked to bars and beats.
How long can the recording be?
Up to 10 minutes of audio and 40 MB per file. A short clip of the melody you care about transcribes faster and is easier to read in the piano roll.
What happens to my file?
It is processed on our own servers and deleted after your result is delivered — it is never shared and never used to train AI.