Celebrating 50 in 2016 by Egantx7

Question 11

This musical opened on Broadway in 1966, and went on to win seven Tony Awards. This musical was based on the 1951 play I am a Camera, which in turn was based on the Christopher Isherwood book Goodbye to Berlin. Identify this musical that saw Joel Grey go on to become one of the few actors to win a Tony and an Oscar for the same musical role.