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.
nanoKeyStudio and Korg Gadget Taipei Controls Electribe 2 Sampler
By selecting Native mode for your nanoKeyStudio in Korg Gadget2, you can control Gadget Taipei CORRECTLY to midi control your apps and external hardware. I show how this is done in my demo of controlling Korg Electribe 2 Sampler.
While native mode may not be always ideal when using nanoKeyStudio with Gadget, for using your nanoKeyStudio, you want to set your controller to native mode.
If you are using a different keyboard, you are going to have to use the techniques Jakob Haq describes in his other video.