Turn an MP3 into editable musical notes.
Upload an MP3 to estimate its pitches and timing, then download the result as a MIDI file. MIDI contains note events you can edit in a piano roll; it is not a printed score or a list of guaranteed note names. Try a short, clear melody first, then compare the exported notes with the recording.
Choose an MP3 to convert“Notes” can mean two different outputs
A musical note can be shown as a named pitch such as A4, placed on a staff, or stored as a timed event. This page's converter creates the third kind: MIDI note events that a DAW or MIDI editor can display on a piano roll. It does not render sheet music or promise a perfect written transcription.
Listen to a known-note test, then inspect its MIDI
To show what this site's extraction can look like, we generated a short mono WAV with five planned pitches: D4, F4, A4, A4, and D5. It is a synthetic test signal—not an MP3, a commercial song, or a recorded instrument. The WAV and the MIDI actually exported by Midilace are available below.
That test produced 12 MIDI events: the five intended pitches appeared, along with short same-pitch continuations and two brief higher-octave events. This is why an extracted note track should be checked against its input. This example demonstrates the note output format; it does not establish how every MP3 will convert.
For the event-by-event table and exact test setup, read the full MIDI extractor test.
Make an MP3 note track in three steps
- Start with a short, clear passage. A single melody is easier to check than a full mix. Keep the original MP3 nearby.
- Convert it in your browser. Open the Midilace converter, choose the MP3, then select Convert to MIDI. The browser estimates note pitches and timing and prepares a
.middownload. - Compare and edit. Import the MIDI into a DAW or MIDI editor. Listen beside the MP3 and check missing notes, false notes, note starts, and note lengths before using the result.
Processing runs in your browser, so the recording is not sent to a conversion server. The first conversion may take longer while the local decoder and note model load.
What can affect the extracted notes?
Overlapping instruments, chords, drums, reverberation, distortion, and noisy recordings can make pitches or note boundaries harder to estimate. A MIDI file also does not contain the original MP3 audio, lyrics, or a printed score; it contains performance data that your MIDI software can display and edit.
If you specifically need notation on a staff, use software that can turn a MIDI file into a score, or choose an audio-to-sheet-music workflow. If you need editable note events, the MIDI extractor guide explains how to check the result.
MP3 to notes questions
Can I convert MP3 to notes for free?
Midilace lets you use its browser converter without an account and download the estimated notes as MIDI. Check the result against your source recording.
Will it give me note names like C4 or A4?
The download is a MIDI file, which MIDI software can show as note names or piano-roll blocks. This page does not create a text list of note names or a printed staff score.
Can it turn a whole song into an accurate score?
No accuracy is guaranteed. A full mix can contain overlapping parts, and the exported notes may need editing. The linked controlled test also contains extra events.
Does the MP3 leave my device?
The converter decodes and analyzes the recording in your browser. The audio is not uploaded to a conversion server.