I went with my DH to see a gig by Focus, a Dutch band he raves about, but I haven't listened to them at all. I found myself being very easily drawn in to their music, it was so energetic, varied and different to anyone else I've ever heard. And they are not young, the two senior members are almost 80 and the "youngsters" appeared to be in their 40's, maybe early 50s. What bands have you unexpectedly found that you like?