This old guy listens mainly to 70's hard rock and progressive rock. I just don't get the "new" music at all, especially rap.
My all-time favourite band is Deep Purple. I also listen to Max Webster, the older RUSH albums, Triumph, Neil Young, Pink Floyd, Cream, etc.
I've recently been listening to an English band called "Ozric Tentacles" who play a really amazing mix of ambient/techno/rock. They have a smokin' guitarist and are constantly changing the line-up of the band. They are about the only "newer" music that I'll listen to.