Topics and the taught material are very good on Open Studio. The musicians are wonderful and their skills are amazing. Howewer, in my opinion, often it's not simple to follow the lessons because most of the interesting things are not explained nice and slowly. I'm pretty an intermediate/advanced piano player, so if I have this kind of difficulty, I think that this problem is widespread if most of the subscribers are beginner. Obviously this is my opinion. Finally I'm pretty sorry because I think that, with these musicians, I could learn a lot of things and become a better musicians, but unfortunately this is not so easy. I'm aware that topic is complex, but in the future, if this question can be solved, please do it.