For Earth Day, here’s a song that is as relevant today as it was back in 1968 when it made its debut in the Broadway musical “Hair.” Written by Gerome Ragni and James Rado on the lyrics and hipster musician Galt MacDermot on the music, “Hair” was originally billed as “The American Tribal Love-Rock Musical.” MacDermot also wrote the music to the 1971 musical “Two Gentlemen Of Verona” and released several influential funk and instrumental jazz albums that are currently the rage amongst those “in the know” of the hipster cognoscenti. Actress and singer, Shelley Plimpton is the vocalist on this cut. Plimpton is the mother of Martha Plimpton, who currently stars in the popular TV series “Raising Hope.” The cast album to “Hair” has managed to stand the test of time and the musical has enjoyed numerous successful revivals and tours around the world. Happy Earth Day to all.