Audiobus: Use your music apps together.
What is Audiobus? — Audiobus is an award-winning music app for iPhone and iPad which lets you use your other music apps together. Chain effects on your favourite synth, run the output of apps or Audio Units into an app like GarageBand or Loopy, or select a different audio interface output for each app. Route MIDI between apps — drive a synth from a MIDI sequencer, or add an arpeggiator to your MIDI keyboard — or sync with your external MIDI gear. And control your entire setup from a MIDI controller.Download on the App Store
Audiobus is the app that makes the rest of your setup better.
Sticks and Snares / BeatHawk Mallets & Soft Drummer
I discovered making this that I could record a drum track, duplicate it and overlap the duplications. Veeery in-ter-est-ing! (for those old enough to rrmember Laugh In and too old to remember the name of the comedian, dressed as a Nazi, who said it).
So this track has four tracks of one SD track with three varying overlaps on each track creating new patterns which I mixed together. Trial and error to get the rhythmic overlays in phase, but pretty easy to accomplish. BeatHawk vibes, marimba and celeste. Two instances of iFretless bass with two different attacks.