A friend of mine sent me a boot for a Pink Floyd show in Philadelphia back in 1987 I didn't have. Now, that's not what made me happy.....although I was certainly glad to have it! On the third disc, are some sound checks they did before show in Vienna in 1988. One of the "untitled jams" was based on Heartbreaker.....and not Pat Benatar's version. David was doing a little homage to Jimmy Page! That's the first time (that I've heard) of him doing any thing Zeppelin, even as a gag or jam. Two great guitarists....now THAT made me happy.