^Brilliant Jethro Tull song and video
By the way, since you mention grunge .. As all prog heads already know, Kurt Cobain cited King Crimson's 1974 album Red as a major influence on his music. The title track from that album is a beast of a song. It's sophisticated and intelligent, yet loud, a bit scary and perhaps even a bit ugly in parts. Of course, it is also 100% brilliant!