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.
OT - Korg Wavestate
I got my Wavestate a couple of days ago, still finding my way around as it has a very steep learning curve as its very unique, unlike nothing else.
Well I suppose you could say its similar to the original wavestation, which I do have for my iPad, but it doesn't actually feel anything at all like the wavestation IMO, just shares a similar concept, but the execution and use and feel and outcome between the wavestation and wavestate is vastly different.
I never got into the wavestation as it was too much of a pain in the butt to use, and I always found you could twiddle knobs and there would be virtually no change at all (i.e. playing around with the filters in the wavestation made hardly any discernable change to the sound, or maybe that was just me not knowing how to use it properly). But the wavestate is nothing like that, you can go from conventional piano sound to constantly evolving slow atmospheric soundscapes in just several minutes.
If anybody is considering a new piece of hardware, its definately worth a look.