Question: Which musical revue directed by Richard Maltby Jr. is named after a song by Fats Waller?
Sentence (from "Ain't Misbehavin' (musical)"): Ain't Misbehavin' is a musical revue with a book by Murray Horwitz and Richard Maltby, Jr., and music by various composers and lyricists as arranged and orchestrated by Luther Henderson.
Relevant evidence: No