Billy Joel is an interesting cat. Many years ago in an interview in a certain magazine affiliated with bunny ears he had some choice words for the No Nuke artist of the day and was pro Nuclear Power, and if my memory was correct was a bit profane about it. Perhaps he is not a liberal as he lets on to be...
I knew his security guys here in L.A. when he tours. Ex Mossad guys. I was shocked in what he said about Bush and Cheney and we thought he was a loony lib. I wont go into specifics but he leans at least libertarian.
I interviewed Billy about six years ago for research on my book “You Keep Me Hangin’ On” with Vanilla Fudge singer/keyboardist Mark Stein.
He was one of only two who did not go into rock because of the Beatles. His idol was (among others) Dave Brubeck. So I sent him a very obscure Brubeck album.