Album: In the Court of the Crimson King (EG,1969) Chart:N/A
Possibly the greatest song that Black Sabbath never wrote.
As much as I'm not a massive Prog Rock fan, King Crimsons music has dated reasonably well possibly because their best material was a pre-cursor allot of seventies hard rock. Even though ITCOTCK is a patchy album (anyone who can sit through 12 minute snooze-fest moonchild without dropping off the sleep deserves a medal) but theirs some real seminal moments on the album. 21st Century Schizoid Man the opening song is a mindblowing proto-metal jazz freakout that sounds ahead of its time.
Here's a documentary on their guitarist and sole founding member Robert Fripp, he's a tad creepy in serial killerish kind of way.