Never really thought of King Crimson as metal since most of their music is more avant-garde jazz related but I guess they did have a stake in its development with their more rockin' numbers, so here is my review from PA:
Although rock music had been becoming more progressive before this release with such artists as the Beatles, Zappa, the Moody Blues and others slowly chipping away at the damn of the progressive reservoir, it was this album that burst open the floodgates and took progressive rock music to a whole new level by stripping away the blues influence and replacing it with classical, jazz and avant-garde.
A very eclectic playlist with mostly accessible songs like “21st Century Schizoid Man” and “The Court of the Crimson King” but also included the inaccessible “Moonchild” which does seem like an exercise of tolerance at times but ultimately is an interesting piece after forcing you to change your musical mindset. A style they would go on to incorporate on future releases.
The album took the world by storm making progressive rock popular and ushering in the next golden age of music. Although it took me longer to love parts of this album than others I ultimately succumbed to its charm and have to give this album no less than 5 stars for its unadulterated brilliance, boldness and importance in musical history.