Provincetown Playhouse has hosted which bass singer who was involved with the Civil Rights Movement?
Provincetown Playhouse:  Paul Robeson performed at the theatre, and E. E. Cummings had his plays performed in the building. Paul Robeson: Paul Leroy Robeson (pronounced ; April 9, 1898 – January 23, 1976) was an American bass singer and actor who became involved with the Civil Rights Movement.
Paul Leroy Robeson