First recorded by the Original Off-Broadway Cast of Hair (1967).
Also recorded by the Original Broadway Cast of Hair (1968).
Hit versions by Zen (NETH #1 1968), Doug Parkinson in Focus (AUS #5 1969), The Cowsills (US #2 1969).
From the wiki: “Hair: The American Tribal Love-Rock Musical was a Rock musical with a book and lyrics by James Rado and Gerome Ragni, and music by Galt MacDermot. The musical broke new ground in musical theater by defining the genre of ‘rock musical’, using a racially integrated cast, and inviting the audience onstage for a ‘Be-In’ finale.
“After an off-Broadway debut in October 1967 at Joseph Papp’s Public Theater and a subsequent run in a midtown discothèque space, the show opened on Broadway at the Biltmore Theatre on April 29, 1968 and ran for 1,750 performances. A cast album recorded by the original off-Broadway cast was released in 1967; the original Broadway cast recording, released in 1968, received a Grammy Award for Best Score from an Original Cast Show Album.