I thought I read some not so kind words about deadmau5 awhile back in this thread, but I came across his MasterClass and wondered if it was useful - anyone taken it ?
Back when I was in art school, at the end of the previous century, I had a friend in the program who was all about the Juxtapoz magazine scene, and painting whatever she thought looked cool, and ignoring the prevailing tastes of the faculty, who were mostly raised on CalArts conceptual art dogma of the 1970s (ideas over aesthetics, beauty for beauty's sake being quasi-immoral, etc)... and this was about 10 years before the gate keepers of high-snobbery finally started to allow street art and other such wonderful and honest things to be deemed worthy of sharing the same auctions with more traditional gallery fodder.
The Chair of the department was a merciless critic of this friend's approach, a real protector of the prevailing order, and this Chair and the general outlook of the department made things not-so-fun for her.
BUT, to the Chair's credit, this friend had a showing of her Juxtapoz-y work, and she sold a lot of stuff. My friend confronted the Chair with this good news, and the Chair told her:
"Well... I don't argue with success."
She recounted the whole interaction to me the next day, because she was so happy to finally get a positive reaction/concession from the Chair. It meant a lot to her... and I've tried to keep this outlook in mind as I roll through this lifetime of new artists, new genres and changing tastes.
Anyway, all of this is my windbag way of saying "who gives a #@$% what anyone else thinks of Joel Zimmerman's work?". If you dig his stuff, and he has some tracks you'd be happy to use as reference tracks for your own mixes, I don't see how a Deadmau5 Master Class could be a bad investment. Nobody achieves the kind of rarified financial success he's achieved without also putting out a product that moves a lot of people. If you're one of those people, then Joel's advice is worth listening to, and probably even paying for.