2. King Crimson, 'In the Court of the Crimson King' (1969)
One of the most influential progressive rock albums of all time, King Crimson's debut eschewed the bluesy bluster of late-Sixties British rock for a Mellotron-drenched mixture of jazz and classical influences, dragging psychedelia to a darker place than it had ever been before. "King Crimson will probably be condemned by some for pompousness," wrote Rolling Stone's John Morthland at the time, "but that criticism isn't really valid. They have combined aspects of many musical forms to create a surreal work of force and originality." With guitarist Robert Fripp and multi-instrumentalist Ian McDonald piling on layers of majestic sound, and bassist Greg Lake intoning evocative and foreboding lyrics, tracks like the unrelenting opener "21st Century Schizoid Man," the haunting "Epitaph" and the stately closer "The Court of the Crimson King" set the tone and template for the coming prog revolution. D.E.