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Stem Splitter

From stems to MIDI

A stem is audio; MIDI is the notes. How to go from one to the other, which parts transcribe well, and why splitting first gives you a better MIDI file than converting the whole mix.

Lesson 8 · advanced · 5 min read

Open Stem Splitter

Stems give you the sound of a part. MIDI gives you its notes — something you can re-voice with a different instrument, quantise, transpose or print as notation. The shortest route from a finished song to a usable MIDI file goes through a stem.

What transcribes well

Stem
What to expect
Bass
Transcribes most reliably — the best place to start.
Vocals
Lead melody line.
Piano
Chords and melody.
Guitar (experimental)
Dense or heavily-strummed guitar is hit-or-miss.

The parts with a Convert to MIDI action, and the tool's own note on each.

Careful

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. Treat the result as a head start on a transcription, not a finished score.

Two ways in

  • From a split you already ran: press Convert to MIDI under the stem. 300 credits per minute of that stem.
  • From a whole song: the Audio to MIDI tool splits and transcribes in one job, and merges the parts into one multitrack MIDI file.
  • Audio to MIDI converterWhat the standalone converter does, which parts it transcribes and what it costs.

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Previous lessonDuets: separating male and female vocalsNext lessonIsolating orchestral and wind instruments

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