Convert MP3 to MIDI - From Songs, Stems, or Isolated Parts
Upload audio for the part you want to turn into MIDI. Start from a song, stem, or isolated recording, then download an editable .mid draft for your DAW.
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Pro
- ✓ Unlimited songs on our fast, secure cloud
- ✓ 6-stem separation: vocals, drums, bass, piano, guitar + instrumental
- ✓ Transcription + PDF score drafts + editable MusicXML + MIDI
- ✓ Drum kit pieces (kick/snare/toms/cymbals) + drum MIDI + notation drafts
- ✓ Piano transcription (hands + pedals)
Full access • Cancel anytime • Trial then $9.99/mo or $99.99/yr
What You Get
One plan unlocks everything below. Start with one tool — use the rest when you need it.
Detailed Piano Transcription
Split piano into left/right hands with sustain pedal events, then export MIDI and MusicXML.
Drum Kit Breakdown & Notation
Split drums into kick, snare, toms, and cymbals — plus Drum MIDI and drum notation drafts.
Stem Separation
Split a song into 6 stems: vocals, drums, bass, piano, guitar, and Other — Opus/MP3/WAV downloads for your DAW.
Loved by Musicians Worldwide
"The demixing was very good, and much better than I was getting with RX 10. Thank you for giving me this chance to try the PRO version."
"Your platform is the best music score generator I've found, and it keeps getting better with every update."
"I demixed the tracks with your app for my latest production project. The results were fantastic!"
Frequently Asked Questions
What do I get after processing?
Each job returns downloadable files for the output you selected: stem audio packs, DAW-ready MIDI, and when applicable, PDF score drafts + editable MusicXML.
What audio formats are supported?
MP3, WAV, FLAC, M4A/AAC, OGG, AIFF, and most common formats. If something needs conversion, the app handles it automatically.
How is processing handled?
Jobs run through Music Demixer's secure cloud service to generate your outputs quickly and reliably. You upload once, then download the files for your workflow.
Is there a free plan?
We offer a 1-day free trial with full access. After the trial, you can keep Pro or cancel anytime from your account page. Card required to start the trial.
How do I convert MP3 audio into a MIDI file?
Upload MP3 or WAV from a song, stem, or isolated recording, run the MIDI workflow, preview the draft, then download the .mid file for DAW editing. This page is best when you want the part you care about instead of a full-song arrangement draft.
When should I isolate a stem first?
Isolate a stem first when the part you want is buried under other instruments. Cleaner source audio usually produces a more usable MIDI draft.
Can melodic vocals be converted to MIDI notes?
Yes. Melodic vocals can map well when the lead line is distinct enough to follow. Vibrato, doubles, harmonies, and busy backing tracks reduce precision, so isolation usually improves the draft.
Can guitar or bass be converted to MIDI?
Yes, distinct guitar riffs and bass lines are good candidates. Heavy distortion, overlapping notes, and dense mixes usually require isolation or cleanup after import.
Why does the MIDI draft sound simpler than the original audio?
MIDI captures note events, not the full texture of the recording. Timing, overlap, articulation, and voicing often need cleanup once you import the file into your DAW.
What audio can I upload for MIDI transcription?
Upload audio you're authorized to use. You're responsible for copyright and licensing compliance in your jurisdiction.
Can I use the output commercially?
Yes, if you own the rights to the input audio or have permission or a license, you can use the outputs commercially.
Generate MIDI for the Part You Want
Start from a song, stem, or isolated recording. If the part is buried, isolate it with Music Demixer first.
MP3 to MIDI Converter Online for Vocals, Piano, Guitar, Bass, and Leads
Convert MP3 to MIDI online when you want one musical part as editable MIDI instead of a full-song arrangement draft. Start from a song, stem, or isolated recording, then generate editable MIDI for the vocal melody, piano passage, guitar riff, bass line, hook, or lead line you want to clean up in your DAW.
Hear the source part, then hear the MIDI draft
The proof above uses a real piano passage from a song: hear the source part, compare it against the backing track, then listen to the MIDI rendered from the same downloadable file. You are not guessing what the draft might sound like before you upload your own audio.
Best results when the part is distinct enough to follow
- Vocal melodies, piano passages, guitar riffs, bass lines, hooks, and leads are strongest when the part is distinct enough to follow.
- Dense mixes, reverb, doubles, and overlapping instruments usually need isolation and cleanup.
- Start from a full song when that is what you have; use stem separation to isolate the part you want when needed.
Choose the right source
- Song: use this when the line is clear enough to follow or you can isolate it first.
- Stem: use this when you already have a cleaner vocal, piano, guitar, bass, melody, hook, or lead line.
- Sheet Music: use this when you need notation drafts and MusicXML cleanup instead of DAW editing.
What the MIDI file gives you
The download is an editable .mid draft for Ableton Live, Logic Pro, FL Studio, GarageBand, Cubase, Reaper, or another DAW. Expect to adjust timing, note lengths, octave placement, and voicing after import.
Isolate the part when needed
If the line you want is tucked inside a dense mix, use Music Demixer stem separation first and transcribe the isolated part. That usually produces a better MIDI draft than asking the converter to infer the line through the whole mix.
Upload, generate, and edit
Upload a song, stem, or isolated recording, generate MIDI for the part you want, then download the file for cleanup, arranging, remixing, or doubling parts in your DAW.
Ready to convert MP3 to MIDI? Upload audio for the part you want to turn into MIDI.