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 StoreAudiobus is the app that makes the rest of your setup better.
Comments
Here are my favorites at two price points. These are both semi-weighted action which works best for me (I am too lazy to carry the extra weight required for hammer-action).
M-Audio Keystation 61 MK3: $200 USD. Decent semi-weighted action. Very compact (just a few buttons and one fader; no pads or knobs).
Arturia KeyLab MkII 61: $470 USD. Higher quality than the M-Audio. Slightly better semi-weighted key action. Plenty of knobs, faders, pads, buttons, etc. Aluminum body. The white version looks very nice (in my opinion).
I posted the new Arturia because it seems to be all the rage on YouTube . Great and informative comments from both of you though I must say . Thanks .