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.
An ambient piece
I recorded a few simple phrases using my favorite iOS piano (Big Softy S in MU Waverley) and let the recorder run a while before I pressed stop, I put those recordings in file players in AUM. It’s the Music for Airports idea. Then I bussed the whole thing into Velvet Machine with everything on max for the pad sound. I added a couple vocal samples and it came out like this: