I Dig Rock and Roll Music by Peter, Paul, and Mary
It has a rather patronizing or cynical feel to me today that I didn't pick up on before. I guess I never listened that closely to the words in the past. It mentions the Beatles "selling" their music and loving the music when the "words" don't get in the way. Folk music was quickly replaced by the British Invasion music so maybe they were a little bitter. I know that they didn't write this song, but it echoes some things Mary Travers said, though.