Pink Floyd’s vision quest on The Dark Side of the Moon, meanwhile, was much different. Zeppelin’s music went outward, whereas Dark Side was directed inward. Preoccupied with alienation, clinical depression, man’s inhumanity to man, and the possibility of losing your damn mind at any moment, Pink Floyd deployed outer space as a metaphor for the vastness of inner space. And inner space is where teenagers spend the majority of their time.
