The characters first appeared in live stage production in 1967 with the musical "You're a Good Man, Charlie Brown", scored by Clark Gesner. It is a collection of musical sketches, where the characters explore their identities and discover the feelings they have for each other. The play was performed off-broadway, as well as later being performed as a live telecast on NBC. The play continued to have other professional performances, in the London West End, and later a Broadway revival, while also being a popular choice of musical by amateur theater groups such as schools.