Updated
How to convert audio to MIDI in Logic Pro
Logic Pro can turn a recording into MIDI without any plug-in: Flex Pitch handles melodies, the drum replacement tool handles single drums, and Stem Splitter can pull a part out of a mix first. This guide walks through each one, with the exact menu names, and shows where each runs out.
The short answer
For a melody: open the audio region in the Audio Track Editor, switch the Flex mode to Flex Pitch, then choose Edit > Create MIDI Track from Flex Pitch Data. For a single drum: choose Track > Replace or Double Drum Track.
Method 1: Flex Pitch, for melodies and bass lines
Flex Pitch analyses the pitch of every note in an audio region, and Logic can write those notes to a new software instrument track. Apple notes that it works best with monophonic material: one note at a time, such as a vocal, a bass line, a solo instrument or a whistled idea. Chords can be misread.
- 1
In the Tracks area, double-click the audio region to open it in the Audio Track Editor.
- 2
Click the Show/Hide Flex button in the Audio Track Editor's menu bar.
- 3
Choose Flex Pitch from the Flex Mode pop-up menu. Logic analyses the region and shows each detected note.
- 4
Fix anything that looks wrong now: a note detected an octave off, or a slide split into two notes. Errors here carry straight into the MIDI.
- 5
Choose Edit > Create MIDI Track from Flex Pitch Data. This is the Edit menu in the Audio Track Editor's own menu bar, not the one at the top of the screen.
- 6
A new software instrument track appears below the audio track, with one MIDI region for each audio region. Choose a patch from the Library and tidy the notes in the Piano Roll.
Method 2: Replace or Double Drum Track, for drums
Flex Pitch is for pitched parts. For drums, Logic finds the hits in a track and writes a MIDI note for each one, which you can use to trigger a new sample or keep as MIDI. It works on one drum at a time: a kick track, a snare track, a tom track.
- 1
Select the audio track that holds the single drum.
- 2
Choose Track > Replace or Double Drum Track. (Older versions called this Drum Replacement/Doubling; that is still the name of the window.)
- 3
Set the Instrument to Kick, Snare, Tom or other, and choose Replacement (which mutes the original regions) or Doubling.
- 4
Adjust the Relative Threshold until every real hit is marked and nothing else is. Use Preview to listen.
- 5
Click OK. Logic creates a software instrument track with Sampler and a MIDI region of trigger notes. With the trigger note on AUTO, a kick plays C1 (note 36), a snare D1 (38) and a tom A1 (45).
Converting a full song: split the stems first
Neither method can pick one instrument out of a finished mix. Logic Pro has Stem Splitter for that: it separates a region into vocals, drums, bass, guitar, piano and other. It needs a Mac with Apple silicon (M1 or later).
- 1
Control-click the audio region and choose Processing > Stem Splitter.
- 2
Pick a preset, or tick the stems you want, and click Apply.
- 3
The stems appear as subtracks of a summing stack and the original region is muted.
- 4
Run Flex Pitch on the bass or vocal stem, and Replace or Double Drum Track on a drum stem. Note that the drum stem holds the whole kit, so the drum tool hears kick, snare and cymbals together.
Where Logic runs out, and what to do instead
For one clean melodic line, Flex Pitch is free, fast and already on your Mac. The work grows with the material:
- Chords and piano: Flex Pitch is built for one note at a time, so polyphonic parts need a polyphonic transcriber.
- A whole drum kit: the drum tool works one drum at a time, so a full kit means separating each piece first.
- A full song: every part is a separate conversion and a separate clean-up, and the timing is the timing you played, with no tempo map of a song you did not record in Logic.
The faster route for full songs
The audio to MIDI converter does the whole job in one pass: it separates the song, transcribes every instrument with a method suited to it (polyphonic for piano and guitar, nine kit pieces for drums), writes a tempo map, and exports one .mid file. Drag that file into the Logic Tracks area and each instrument arrives on its own track; when Logic asks whether to import the tempo information, say yes to keep the detected tempo.
For one instrument, the piano to MIDI and drums to MIDI pages explain what to expect, and hum to MIDI is a free way to capture an idea in the browser before you open Logic at all.
Sources
Menu names and edition limits were checked against the vendor's own documentation on 19 October 2026.