Pink Floyd's sound and light shows in the 1960s defined psychedelia, but their later recordings combined rock, orchestral music, literature, and philosophy. Dark Side of the Moon and The Wall ignored pop music's usual strictures to focus on themes of madness, despair, brutality, and alienation. Here, 16 scholars set delve into the heart of Pink Floyd by examining ideas, concepts, and problems usually encountered not in a rock band's lyrics but in the pages of Heidegger, Foucault, and Sartre. These include the meaning of existence, the individual's place in society, the...