Last night I watched one of the items on my DVR: the stage musical AN AMERICAN IN PARIS.
I'm sorry I didn't see it live. I'll have to watch again to pay better attention to the story they've concocted, but I did like most of the music. Of course it's Gershwin and I love ALL of the music, but on first pass there were a few places here and there in the concert works where I'd wonder "now, why change that??" But in the scheme of things, no biggie.
I'll tell you one thing, though. I'd have to see the music but I think I could pull off playing the keyboard book. As a teen I learned the Concerto and Rhapsody fairly decently, and picked at enough of the other stuff to think it wouldn't be impossible to get it into my fingers now. It also doesn't sound like they included anything too horribly virtuosic. Anyway, looks like Tams-Witmark expects to have it available this fall, so maybe an opportunity to prove or disprove this will come along.