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Audio to MIDI

AudioPod converts songs and stems into editable MIDI on every plan, Basic included: upload a track, AudioPod's audio-to-MIDI engine separates it and transcribes bass, vocals, piano and guitar (experimental) into one .mid file per instrument plus a merged multitrack file, at 960 credits per minute of audio.

Last updated October 14, 2026

Convert audio to MIDISee plans and credits

At a glance

The facts

Instruments transcribed
Bass, vocals, piano and guitar (experimental)
Selected by default
Bass, vocals and piano
Not transcribed
Drums, percussion and the leftover "other" part
Input
An audio or video file, or a link; at least 6 seconds long
Output
One .mid per instrument, one merged multitrack .mid, and the separated stem audio
Tempo
Detected automatically by beat tracking, or set 30–300 BPM through the API
From a full song
960 credits per minute (the stem split is included)
From a stem you already split
300 credits per minute of the stem
Minimum charge
10 credits
Piano / vocal specialists (Creator+)
990 credits per minute converting an existing stem; 1,728 per minute from a full song (split included)
API
POST /api/v1/midi/convert · POST /api/v1/midi/convert/from-stems/{stem_job_id} · MCP tool audio_to_midi

How it works

Step by step

  1. 01

    Open Audio to MIDI and upload a song or paste a link.

  2. 02

    Pick the instruments to transcribe (bass, vocals and piano are on by default).

  3. 03

    Check the credit estimate and run the job.

  4. 04

    Download the per-instrument .mid files or the merged multitrack file and open them in your DAW.

How a conversion runs

Each job moves through 3 stages, shown live in the tool: Separating stems, Transcribing notes and Merging MIDI tracks.

  • Separating stems: the song is split so each instrument is transcribed on its own, not from the full mix.
  • Transcribing notes: each selected instrument is turned into notes with onsets, lengths and pitches.
  • Merging MIDI tracks: the per-instrument files are combined into one multitrack .mid with the tempo and a named instrument on every track (vocals as Lead 6 (voice), bass as Electric Bass (finger), guitar as Electric Guitar (clean) and piano as Acoustic Grand Piano).

What to expect

MIDI is a starting point — expect to tidy timing and note lengths. Drums aren't transcribed yet. Dynamics are approximate. Works best on clean recordings.

  • Bass: Transcribes most reliably — the best place to start.
  • Vocals: Lead melody line.
  • Piano: Chords and melody.
  • Guitar (experimental, off by default): Dense or heavily-strummed guitar is hit-or-miss.
  • Drums aren't transcribed yet — coming later.

Tuning through the API

API callers can override the note-detection defaults per job:

  • onset_threshold (default 0.5) — how confident a note start must be.
  • frame_threshold (default 0.3) — how confident a sustained note must be.
  • min_note_len_ms (default 128) — the shortest note kept.
  • tempo_bpm (30–300) — skip beat tracking and write this tempo.
  • engine — general, or the piano or vocal specialist on Creator and above.

FAQ

Questions people ask

Which instruments can AudioPod convert to MIDI?

Bass, vocals, piano and guitar (experimental). Drums aren't transcribed yet — coming later.

How much does audio to MIDI cost?

960 credits per minute from a full song, the split included — a 4-minute song is 3,840 credits (about $0.51 pay-as-you-go). Converting a stem you already split costs 300 credits per minute of that stem, 1,200 for 4 minutes. Every plan, including the free Basic plan, can run it from its credits.

Can I convert a stem I already split?

Yes. After a Stem Splitter job, press Convert to MIDI under a bass, vocals, piano or guitar stem. That costs 300 credits per minute of the stem instead of the 960 full-song rate, because the split is already done.

What files do I get?

One .mid file for each instrument, a merged multitrack .mid with the tempo and a named instrument on each track, and, when you start from a full song, the separated stem audio.

How accurate is the MIDI?

MIDI is a starting point — expect to tidy timing and note lengths. Drums aren't transcribed yet. Dynamics are approximate. Works best on clean recordings.

Is there a better engine for piano or vocals?

Yes, on Creator and above: the piano and vocal specialists transcribe the piano and vocals stem. Converting a stem you already split costs 990 credits per minute of the stem; starting from a full song with a specialist selected costs 1,728 credits per minute, the split included. Every other instrument uses the general engine.

Is audio to MIDI free?

It runs on every plan from your credits. The free Basic plan's monthly credits cover about 5.2 minutes of full-song conversion.

Can an AI agent or my code convert audio to MIDI?

Yes. Call POST /api/v1/midi/convert with a file or URL and poll /api/v1/midi/status/{job_id}, or use the audio_to_midi tool on the AudioPod MCP server.

Related

Where to go next

  • Bass to MIDIThe most reliable instrument, with its own tuning.
  • Guitar to MIDIExperimental: what works and what does not.
  • Piano to MIDIThe piano specialist engine (Creator+).
  • Vocals to MIDIThe vocal melody specialist (Creator+).
  • Stem SplitterSplit first, then convert any pitched stem.

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