Currently: Touring the U.S., I think. I'm not really sure about this particular site's reliability.
Music & Lyrics: Jeff Lynne and John Farrar
Book: Douglas Carter Beane
Basis: 1980 film Xanadu
Everybody knows about: Roller skates! 80s! Greek gods!
I have thoughts: Okay, so I obviously chose this one because there aren't that many musicals that begin with X. However, now that I've read the synopsis and see how much the stage version pulls from mythology, I'm really intrigued. Think I'll give the soundtrack a listen.