Formed in 1987, Porcupine Tree has made 10 studio albums which blur lines between Psychedelic, Progressive, Metal, and Alternative genres. A friend from Florida turned me on to this band. To be honest, it took me a little while to get in to them. It's really difficult to place them into a specific mold. They have been so amoebic throughout their career. Unfortunately, their tour doesn't cross Pennsylvanian lines this summer. I've heard really great things about their live show.