Mr. Brook was a three time Tony winner, known for his unorthodox approach to traditional plays.
The Spring Awakening and Pitch Perfect star is departing the Howard Ashman-Alan Menken musical to begin filming So Help Me Todd for CBS.
Look back at the six-time Tony winner's Broadway career thus far.
The new musical starring a cast of Broadway veterans finishes its run at Houston, Texas' Alley Theatre.
Igor Golyak's adaptation of the Chekhov classic is also available virtually.
Watch just a few of the highlights from the career of the history-making six-time Tony winner.
Playbill commemorates Buckley's birthday July 3 with this look back at memorable performances and defining vocals.
The adaptation of the hit film and novel will play a pre-Broadway engagement in Chicago this summer.