AI sums it up this way...
"MixPad itself does not convert an existing MP3 (audio) file directly into a MIDI file. You can only import audio, record/edit MIDI, and export audio formats like WAV/MP3.
What this means in practice
To go from MP3 to MIDI using MixPad and other tools, you typically do:
Use an external MP3→MIDI converter
- Upload your MP3 to an online “audio to MIDI” converter (search “online audio to MIDI converter” or “MP3 to MIDI online”).
- Download the resulting
.mid file to your computer.
- Note: These converters work best on simple, monophonic lines (e.g., single melody), and results are often imperfect, especially for full songs.
Import the MIDI into MixPad
Open MixPad and create a new project.
Drag the .mid file onto a track or use the menu option to add/import a MIDI file.
MixPad will show the MIDI as a clip; you can double‑click it to open the MIDI editor and adjust notes, lengths, and timing.
Assign instruments and edit
Select a virtual instrument or sound for that MIDI track (piano, synth, etc.).
Use the MIDI editor to fix wrong notes, timing issues, or simplify the part.
You can layer additional MIDI tracks by recording MIDI directly in MixPad if you have a MIDI keyboard or use the computer keyboard.
Export if needed
If you only need the MIDI file, you already have it from the converter step.
If you want an audio render of the MIDI performance, choose MixPad’s export option to create WAV/MP3.
Important limitations
- MixPad does not include a built‑in “convert audio clip to MIDI” function; it can record and edit MIDI but does not derive MIDI from an MP3 automatically.
- MP3→MIDI conversion quality heavily depends on the source: solo instruments convert much better than dense mixes."