The original cast included Mary Tyler Moore, Richard Chamberlain, Sally Kellerman, Larry Kert and Priscilla Lopez. The production was designed by Oliver Smith, directed by Joseph Anthony and choreographed by Michael Kidd with assistance from Tony Mordente, and produced by David Merrick. Despite the impressive list of collaborators, the project never gelled. It underwent constant and massive changes in its script and score during out-of-town tryouts. The original book by Abe Burrows was seen in Philadelphia, then scrapped completely, and Edward Albee, an unlikely choice, was hired to re-write before a Boston tryout. Burrows was the original director but left when Albee was brought in. He was replaced by Joseph Anthony. On a daily basis, the cast was given new material hours before curtain time, and the piece was overly long, running nearly four hours. Burrows's departure resulted in low morale among cast members, and Moore was convinced that Merrick planned to fire her soon after opening night.