How important in Music Theory or playing instrument - Quadruple threat now?

I saw Bandstand when it was a work in progress Oct of 2015 at Papermill playhouse - Cory was NOT turned toward the audience or “really” playing during the show… saw it in NYC this spring, and it was interesting how the staging had changed and how much more he was doing. Good for him!! Nicest kid you’d meet in day’s walk too :slight_smile: