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.
Tempo experiment using Spider patch in Kaspar
Here is a kind of experiment for using the tempo changing function in AUM. I like how this adds another level of expression to musical phrases and keeps things from having a machine-like regularity. To make this I improvised chords playing one of @Spidericemidas’ great patches for Kaspar. These have interesting arp figures going on and I thought this would highlight tempos. I also recorded a kind of lead voice using Phosphor3. ( hey Spider, there’s some fertile ground for presets there) . I also used the new Mozaic script for changing the AUM tempos. I like that because it also has increment/decrement buttons that allow some subtle changes. It uses pitchbend control for changing the tempo. So I recorded that in Midi Tape Recorder to play along with my Helium recording.
One thing I found is that if you’re using any delays there can be some unpredictable artifacts when changing tempos but generally it works very smoothly.