I saw deadmau5 with my dad a few years ago, and while I think he enjoyed the music, he simply could not get over the mouse head. He still brings it up. "Remember that guy with the big mouse head?" he'll say from time to time. Yes, Dad. I remember (which is coincidentally the title of a really great deadmau5 song).
I've also seen Sia with my dad. I'm not sure he understood her hair thing either, although he likes the song "Cheap Thrills." But personally, I think it's cool when celebrities create these personas by covering their face. How about you?