How good is smartphone/audio interface/midi controller keyboard?

[Jonathan Osborn]

Is 2015 yet the year when one could, as a keyboardist, use their smartphone or handheld device as a sound source live? Also, even better, have effects running on those sounds? even better, record, and edit later?

 

[CowboyNQ]

Jordan Rudess seems to think so.

 

[Becky]

That's intriguing! Looks quite fiddly though...