The curtain rises to Hasidic Jew hand puppets, the parting of the Red Sea, dancing, flashlights and “four Jews in a room bitching” ? and this is just the first 60 seconds of “Falsettos.”

The energy and enthusiasm of the cast is palpable in this amalgamation of two one-act shows, “March of the Falsettos” (itself a sequel to William Finn?s “In Trousers”) and “Falsettoland,” set in 1979 and 1981.