Convert MP3 to MIDI - From Songs, Stems, or Solo Recordings
Upload piano, drums, or the part you want to turn into MIDI. Start from a song, stem, or solo recording, then download a MIDI file you can edit in your DAW.
Simple, Transparent Pricing
Start your 1-day trial with 5 full-quality jobs up to 5 minutes each
Pro
- ✓ Secure cloud processing for supported Music Demixer workflows
- ✓ 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)
5 full-quality jobs up to 5 minutes each • No card required • Activate Pro for $9.99/mo
What You Get
Access Music Demixer workflows for stems, piano, drums, MIDI, and score drafts.
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 — MP3 or Opus 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?
Start with 5 full-quality jobs up to 5 minutes each. No card is required for the trial. Activate Pro from your account when ready for $9.99/mo, and cancel anytime after activation.
How do I convert MP3 audio into a MIDI file?
Upload MP3 or WAV from a song, stem, or solo recording, run the MIDI workflow, preview the draft, then download the MIDI file for DAW editing. This page is best when you want the part you care about instead of a full-song arrangement draft.
Can I start from a full song or a stem?
Yes. Start from a full song when you want Music Demixer to prepare the selected part in the workflow, or upload a stem or solo recording when you already have one. Piano and drums use the most specialized MIDI paths; other parts are pitch drafts for cleanup.
Can melodic vocals be converted to MIDI notes?
Yes. Melodic vocals can become useful pitch drafts. Vibrato, doubles, and harmonies often need cleanup after import because the vocal note draft is less specialized than the piano and drum paths.
Can guitar or bass be converted to MIDI?
Yes, guitar riffs and bass lines can become editable pitch drafts. Heavy distortion, overlapping notes, and complex articulation usually require 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 solo recording. Music Demixer can separate before transcription when that workflow fits.
MP3 to MIDI Converter Online for Piano, Drums, Vocals, 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. Piano and drums have the most specialized MIDI paths. Guitar, bass, vocals, hooks, leads, and Other parts are available as pitch drafts that may need note cleanup after export.
Hear the source part, then hear the MIDI draft
The sample above lets you hear the piano part with its backing track, then watch the MIDI play back in a piano roll. You can judge the output before you upload your own audio.
Best results for piano and drums
- Use Piano when you want the most specialized route from a piano part to editable MIDI.
- Use Drums when you want rhythm and percussion MIDI from a drum recording or separated drum layer.
- Use guitar, bass, vocals, hooks, leads, and Other for pitch drafts that you can clean up in your DAW.
Choose the right source
- Song: use this when you want Music Demixer to start from the full mix and prepare the selected part in the workflow.
- Stem: use this when you already have a vocal, piano, guitar, bass, drum, 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 MIDI file 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.
Full mix or stem input
The MIDI workflow can start from a full song, a stem, or a solo recording. For non-piano and non-drum parts, the expected cleanup comes from draft note transcription, not from Music Demixer's stem separation workflow.
Upload, generate, and edit
Upload a song, stem, or solo 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.