Turn a melody into a MIDI draft
Upload audio, paste a direct URL, or choose a playable library song. The converter estimates the notes and timing; you review and correct the MIDI in your own music software.
Select from My Songs
Use a public audio URL for larger files.
Audio in, MIDI note data out
An audio file contains recorded sound. A MIDI file contains note and performance instructions that can be edited and played with another instrument. Conversion estimates those instructions from the recording.
Clear vocal melodies, guitar riffs, piano sketches, and synth leads are easier to transcribe than dense mixes with several parts at once.
Accepted sources
- MP3 files
- WAV files
- M4A or MP4 audio
- OGG audio
- FLAC audio
Upload MP3, WAV, M4A, OGG, or FLAC files up to 100 MB, paste a public direct audio URL, or select a playable track from My Songs.
What the file contains
The output is a downloadable MIDI file, not audio. It stores estimated note and performance instructions for another instrument to play.
Standard MIDI file
Download a .mid file that can be imported into most DAWs, notation apps, and virtual instrument setups.
Editable note data
Adjust pitch, timing, note length, velocity, quantization, and arrangement details after transcription.
No original sound baked in
MIDI does not preserve the source vocal, guitar, or synth tone. Choose an instrument after import.
Where transcription loses detail
Dense mixes, loud drums, layered vocals, pitch bends, distortion, and complex polyphony can produce missed or incorrect notes.
Treat every output as an editable draft. Listen against the source and correct the note, timing, and velocity data before relying on it.
From audio to editable note data
Wsong.ai analyzes the source and returns a downloadable MIDI file when transcription finishes. The result is a draft, not an exact copy of the performance.
Add the clearest source you have
Upload a local file, paste a public direct audio URL, or choose a playable song from your library.
Let the converter estimate the notes
The transcription model estimates pitch, timing, and note events from the recording.
Review the MIDI
Download the .mid file, open it in a DAW or notation app, and correct the notes and timing that matter.
Give the converter a clear part
One exposed melody or riff is easier to transcribe than a full arrangement. Source choice has more effect on the result than file format.
- Use short clips with one clear lead melody or riff.
- Avoid heavy reverb, distortion, crowd noise, or loud background drums.
- Trim silence and unrelated sections before converting.
- For full songs, convert the clearest melody section first, then edit the result in your DAW.
What to do with the draft
Open the MIDI beside the source audio. The comparison makes wrong notes, timing shifts, and missing events easier to find.
Correct the notes
Remove false detections, restore missed notes, and adjust pitch against the recording.
Correct the performance
Edit timing, note length, velocity, quantization, and expression to match the musical intent.
Choose the sound
MIDI does not carry the source tone, so assign an instrument that fits the new arrangement.
Useful reasons to convert audio
Edit a melody in a piano roll
Move a sung or played idea into note form so you can change pitch, timing, and length.
Try another instrument
Assign the detected notes to a piano, synth, strings, or another virtual instrument.
Notate a rough sketch
Use the draft as a starting point in notation software, then correct it against the source.
Recover a part from generated audio
Estimate the main melodic line from a generated song, then rebuild it with more control in a DAW.
Before you convert audio
What does an audio to MIDI converter do?
It estimates notes, timing, and pitch from audio and stores the result in a MIDI file. You then review and edit that draft in a DAW or notation app.
Can I convert MP3 to MIDI?
Yes. You can upload MP3 files or paste a public direct MP3 URL. WAV, M4A, OGG, and FLAC are also supported.
Does audio to MIDI work on full songs?
It can process full audio, but short clips with one clear melody or instrument are easier to transcribe. Dense mixes usually need more correction.
Can I use the MIDI in Ableton, FL Studio, Logic, or GarageBand?
Yes. The result is a standard MIDI file that can be imported into most DAWs, notation tools, and virtual instrument setups.
Is the MIDI transcription always exact?
No. Transcription is an estimate, especially with polyphonic audio, vocals, pitch bends, distortion, and layered mixes. Use the result as an editable draft.
Is the audio to MIDI converter free?
Yes. Sign in to convert audio without a paid subscription. Normal rate limits apply.
Does the MIDI keep the original instrument sound?
No. MIDI stores note and performance data, not the source tone. Choose the piano, synth, strings, or other instrument in your DAW.
Need Separated Audio Tracks?
Use Stem Splitter when you need six audio tracks rather than note data.
Get StemsNeed Vocal or Instrumental Separation?
Use Vocal Remover when you only need a vocal track and an instrumental track.
Remove VocalsMake an editable MIDI draft
Choose a clear source, run the transcription, and finish the note-level decisions in your own software.
Choose Audio