Discipline, by King Crimson (1981).
I was introduced to this by a college roommate ~1982/1983. It completely changed my perception of music (and other things).
A post inspired by my daughter sending me a spotify link to some milktoast "progressive" rock she's listening to. I feel sick.
This links to the whole album.
https://www.youtube.com/playlist?list=PLXhfRoiJBIitwly9g1nmx6mWt7yqrG4A8