Haven't heard of this musical. I was wondering how to Google the answer based on rhyming words, so I tried "musical fun home" to see if it would autocorrect. When it came up with an actual musical, I confirmed with "best musical winner fun home" just to be sure!
Fun, thank you! (I loved the graphic memoir and am bummed that I missed the original run of the musical — even though it struck me as quite surprising that it would be adapted as such.) I hope it comes back (or at least the film version happens!)
One small note: I think the cross-reference in the clue to 52D should be to 5D (not 5A).