Originally entitled Threes, its plot revolves around Bobby (a single man unable to commit fully to a steady relationship, let alone marriage), the five married couples who are his best friends, and his three girlfriends. Unlike most book musicals, which follow a clearly delineated plot, this is a concept musical composed of short vignettes, presented in no particular chronological order, linked by a celebration for Bobby’s 35th birthday. Originally aired on the PBS series “Great Performances” (season 36, episode 7).