Features
Same MIDI file. Four different views. Play what you can, see what you'll grow into.
Four Simplification Modes
Original shows every note as written. Medium trims the ornaments. Easy keeps just melody and bass. Beginner gives you one note per hand at a time — spaced so you can follow in tempo.
Piano Roll Visualizer
Watch notes fall onto a full 88-key keyboard, color-coded by hand. Left/right hand assignment is automatic and snaps to the actual split points in the music — no more guessing which hand plays what.
Connect Any MIDI Piano
Over USB or Bluetooth. Play along with your external keyboard, or listen through the built-in DLS synth. Full range, full velocity, full sustain pedal.
Smart Library
Add folders of MIDI files and let the app scan them. Search by title, artist, or BPM. Rate favorites one to five stars. Build playlists. Drag from Finder. Everything persists.
Designed for Practice
Slow any piece to 25% speed without changing pitch. Hide grace notes and ornaments. See the detected key signature. Every setting remembers where you left it.
Native Mac, Private
Built in SwiftUI for Apple Silicon. Low CPU, small footprint, fully sandboxed. Your MIDI library stays on your Mac — nothing leaves your machine.
Play any piano MIDI at your skill level.
Piano Midi Player adapts what you see to how you play. Beginners watch one note at a time. Intermediate players see the melody without the ornaments. Advanced players see everything. Same MIDI file — four views.
Why simplification matters
Most piano MIDI transcriptions are virtuosic — fine to listen to, impossible for a beginner to play. Piano Midi Player shows you what actually matters: the melody, the bass, the harmony. Turn up the difficulty as you improve. Same file, different view.
Who it’s for
- Piano students learning to read transcriptions
- Teachers preparing simplified arrangements for their students
- Hobby pianists who just want to play along with the classics
- Anyone with a MIDI collection who wants a focused, modern Mac player
Piano Midi Player does not collect, transmit, or sell any of your data.
System Requirements
- macOS 14.0 (Sonoma) or later
- Apple Silicon or Intel Mac
- USB or Bluetooth (optional — for external MIDI keyboards)