From the song "Gitarzan" by Ray Stevens from his 1969 album, also called Gitarzan.
In a decent pun, Ray creates a bizarre tale of a Tarzan-like character who learns to play guitar (from a book by Chet Atkins) and and forms a band with his monkey Cheetah and human Jane.
He's got a union card
And he's practicing hard
To play the guitar
Gonna be a big star