Online piano audio-to-MIDI converter

Piano audio in.
Editable MIDI out.

Upload a solo-piano MP3 or WAV. Damper reconstructs the notes, timing, velocity and sustain pedal in one editable MIDI file.

Notes · Velocity · Sustain pedal (CC64)

Drop your piano recording here

MP3 or WAV · solo piano only

Up to 15 minutes and 95 MB · files deleted after 24 hours

    Hear the transcription

    Switch between the uploaded piano audio and Damper’s MIDI.

    Nocturne in E-flat major, Op. 9 No. 2

    Frédéric Chopin · performed by Membeth

    0:00 / --:--

    The same expressive passage, loudness-matched. The MIDI preview uses a dry piano: no reverb, no chorus.

    Actual Damper MIDI in CubaseNotes · velocity · sustain pedal (CC64)
    Cubase piano-roll view of the Classical MIDI transcribed by Damper, including notes, velocity and sustain-pedal data

    Piano audio to MIDI, clearly explained

    Can Damper convert a piano MP3 or WAV to MIDI?

    Yes. Upload a solo-piano recording and Damper returns one standard MIDI file that you can download and edit.

    Does the MIDI include velocity and sustain pedal?

    Yes. The transcription includes note velocity and reconstructs sustain-pedal movement as MIDI CC64, not just note pitches.

    Can I edit the result in a DAW?

    Yes. Open the MIDI in common DAWs or notation software to change notes, timing, dynamics, pedal data or the piano sound.