I will admit I haven't read every post here. I may have missed the post that prestates my comment. Sorry if I am redundant.

I will sit through an entire night of someone who doesn't play well and can't sing as long as they are entertaining. There is a difference between entertainment and performance. I've sat through pristine and clinical piano work that was performed perfectly. But I wasn't entertained. And I have heard a haphazard and slapdashed evening of key board work that had me on the floor in tears. I ws entertained.

It all comes down to the quality of the performer, not the quality of the performance at to whether the show is entertaining.

And as far as stage craft is concerned, it can't be learned anywhere but on a stage.

Don