What is considered Jewish music?

I read this post concerning the efinition of Jewish music. Since he quoted Anthrax and Living Colour songs and I am a metal head I found it quite entertaining as well as bringing up the age old arguement about how Shlock Rock and regular music is really one and the same. He also brings up various sources for music and all sorts of good stuff to entertain my fellow music junkies. It is quite long but very interesting and educational.