http://youtu.be/6Bytig-oavY
This is a band that was originally formed for a "mockumentary" in the early 80's called "This is Spinal Tap" about an over the hill English metal band making a reunion tour of North America. It's a hilarious movie and was so popular that the guys made some albums over the years.
In the movie they briefly mention their song about JTR called "Saucy Jack" and at a later date actually wrote and recorded the track which you can hear at this youtube link.
Sadly I do not have a clip from the film itself. Funny song though.