Available now on the Mac App Store · macOS 15 or later

MIDISplitter 1.5

MIDISplitter app icon

Your next idea is already in there.

Find the bass line. Isolate the melody. Keep the perfect four bars. MIDISplitter turns a busy MIDI file into musical parts you can hear, shape, and use—without opening a full production session.

MIDI and audio processing stays on your Mac. No account required.

MIDISplitter 1.5 with the main track list, song timeline, stereo MIDI activity meter, and expanded Track Mixer
Hear the arrangement, follow each part, and prepare your mix in one focused Mac app. Click any product screenshot for a closer look.

From file to fresh idea

Keep the parts that move you.

Whether you are arranging, remixing, teaching, or practicing, a little preparation can open up a whole song.

Hear what’s inside.

Audition the full arrangement, a chosen group, or a single track. Give parts clear names and try General MIDI instruments.

Make it fit.

Transpose a melody, adjust the tempo, and balance your tracks. Listen at a comfortable level with a separate playback-volume control.

Take it into your DAW.

Split tracks into separate MIDI files or merge parts from the loaded song into one file. Exported copies leave your loaded source intact.

Export MIDI Loop window showing a highlighted passage across nine tracks and a Repeats field
Choose the passage. Hear it repeat. Export it for your next session.

New in 1.5 · Loop playback and export

Turn a few great bars into your next starting point.

Pick a phrase, refine the loop markers, and audition the parts together. Choose 1–999 repeats, then export separate loop stems or a merged MIDI loop.

Build a practice backing, collect rhythmic ideas, or bring a focused passage into your DAW. A scrolling timeline keeps larger arrangements within reach.

Watch loop exports

New in 1.5 · Audio Beat Detection

Give your MIDI a tempo to work with.

Start with a recording. Drop in supported audio, review the estimated BPM, and compare tempo candidates. Try half-time or double-time, or enter a tempo you already know.

Apply your choice to a compatible loaded MIDI song and hear where it takes you. Beat Detection finds a starting tempo; it does not transcribe or time-stretch audio.

Watch Beat Detection
Beat Detection with waveform, an 82.055 BPM estimate, tempo candidates, ratio corrections, and Apply Tempo
Compare the possibilities and choose the pulse that feels right.

Expanded in 1.5 · Track Mixer

A little balance makes a big difference.

Place parts across the stereo field with Pan. Shape note strength with Velocity and set a MIDI reverb amount in Advanced Mixer. Track and stereo master activity meters help you see which parts are playing.

Stop or pause, make your adjustments, then listen again. Export your mix choices with the MIDI, ready for the next instrument or music application.

Try a percussion voice.

The Drum Instrument Picker maps a track’s notes to one chosen General MIDI drum sound. Turn a rhythmic line into a kick, snare, or hi-hat part.

Reset just what you need.

Separate Pitch, Tempo, and Mixer resets let you revisit their starting values while keeping your other choices.

Keep your listening level separate.

Turn playback down without changing the mix in your exported MIDI. Your ears and your arrangement get their own controls.

Reverb response depends on the receiving synthesizer. Meters show MIDI activity.

See the Track Mixer in action →

New in 1.5 · MIDI 2.0 files

Bring more of your MIDI library into play.

Work with familiar MIDI 1.0 files and supported MIDI 2.0 Clip/SMF2 files. Export .mid for broad compatibility or .midi2 for a compatible destination.

Optional text reports explain what was preserved or converted, so you can take the next step with useful context.

See supported formats and compatibility →

Help when you want it

Get into the music faster.

Follow 13 video chapters, from your first file to loop exports and troubleshooting. The searchable in-app manual is there even when you are offline.

MIDISplitter 1.5 for Mac

Make more of the MIDI you already have.

Split. Mix. Loop. Find a new starting point.

Requires macOS 15 or later. View current pricing on the App Store.