I came across this.
As I'm a big Zeppelin fan I went for it.
At first some of the results were crap.
But as I looked more and more through the pages
I came across some interesting stuff.
I'm going to try it on some other bands.
Could be quite interesting to see what turns up.
Some of you might find something different.
http://search.singingfish.com/sfw/home.jsp