"The Ballad of Spiro Agnew" was originally written and performed by Tom Paxton. It was covered by John Denver on his 1969 album Rhymes & Reasons.
It is a very short song clocking in at around eighteen seconds.
The song makes fun of Spiro Agnew by saying that he has accomplished nothing.
Here are the lyrics:
I'll sing you a song of Spiro Agnew and all the things he's done.
References
The Ballad of Spiro Agnew Wikipedia(Text) CC BY-SA