March of the Falsettos is a musical with a book, lyrics, and music by William Finn.
A sequel to In Trousers, the one-acter continues the story of Marvin and his journey in search of self-understanding, inner peace, and a life with a "happily ever after" ending. His extended family consists of ex-wife Trina, son Jason, gay lover Whizzer Brown, and psychiatrist Mendel, who complicates matters by becoming involved with Trina. By the end of the piece, Marvin is still unsettled, but he at least knows he has salvaged his relationship with his son.
The muscal premiered Off-Broadway at Playwrights Horizons on May 20, 1981 and closed on September 26, 1981. It transferred to the Westside Theatre on October 13, 1981 and closed on January 31, 1982 after 268 performances. Directed by James Lapine, the cast included Michael Rupert (Marvin), Alison Fraser (Trina), James Kushner (Jason), Stephen Bogardus (Whizzer), and Chip Zien (Mendel). An original cast recording was released by DRG Records.