Old school people would say a master is someone that has 20+ years of experience in performance and 20+ years of experience in teaching.
mmmm. I'd respectfully disagree...You see, old school people did not keep in mind that some kind of a looser with 20+ experience could just as well be called a "master looser". Best, M
I'm sorry but I don't understand ... ?
You don't actually have to play them. Just tell the student to repeat the first 2 bars over and over until time's up.
And definitely, there are master classes and master classes. I've been at master classes conducted by famous performers who basically provided no useful feedback whatsoever, just listened to the student and then complimented them. It seems to me if you want to lead a serious master class you need to be a superstar teacher, the kind who students fight for the chance to study with.