MIDI Editor turns your iPhone into a pocket music studio. Import any MIDI file and instantly see every track, instrument, tempo and note laid out on a professional piano roll — then make it your own. EDIT LIKE A PRO • 88-key scrollable piano roll for every track • Drag notes to change pitch and timing • Resize notes to set their exact length • Adjust velocity per note for real dynamics • Pencil and Select tools for fast editing • Undo / Redo everything FULL TRACK CONTROL • Auto-detects tracks and instruments from your MIDI • Swap any track to one of 128 General MIDI instruments • Per-track volume, pan, mute and solo • Built-in mixer (Arrange) view SHAPE THE WHOLE SONG • Change the BPM (loaded automatically from the file) • 10-band master equalizer with presets • Real-time playback — hear every edit instantly EXPORT ANYWHERE • Export a brand-new MIDI file • Render to MP3 or high-quality M4A audio • Create a ringtone (.m4r) and set it via GarageBand