http://www.youtube.com/watch?v=SY6uwVbC944&feature=related

YOu have to wait for the chorus to get the counterpoint.

I was once at a session where there was a parkeet in the room. We decided to do this one, and I decided to whistle an extemporized descant. That excited the parakeet, who began to whistle and chirp like anything.

Everybody thought the parakeet had mastered the I-IV-V chord progression, and I decided to keep mum about my role.

(We know this song as 'Set Your Fields on Fire,' not 'Set the World on Fire.')