Step 1: One of the big new features in GarageBand for iOS 1.2 is MIDI editing, so let’s find out how it all works. Start by recording anything you like using one of the instruments - you can even record using the Smart Instruments’ preset MIDI parts. Now tap the track editor icon near the top left to bring up the track list. Double-tap a clip to see the Split, Loop, Delete and other track-level options. To get into the details, select Edit.