How many of you actually know why you are playing what you are playing when you are playing? If someone put a gun to your head could you play a Dm arpeggio on a C harp right now? How many could play a 3rd inversion F major arppegio without thinking? How about an Fm7b5 arppegio? These are rudementary skills that most other instrumentalist learn in the first few weeks of lessons. Theory does not care how you get your notes or if you have an altered instrument.