Placing the album in its full cultural and musical context, Kruth provides an illuminating look at the ingredients of its great "sonic stew"—a mixture of musical styles from avant-garde electronic to jazz to classical, all of them contributing to its timeless originality. Lunacy features in-depth interviews with musicians, artists, DJs, and many others who have deeply personal relationships with the record, including a passionate astrophysicist, a leading brain surgeon's nurse (who has performed surgery while "Brain Damage" plays), and a woman who gave birth while screaming along to the Floyd's "Great Gig in the Sky." Packed with behind-the-scenes details and unexpected insights, Lunacy is not just another rock history rehash, but a celebration of a unique time and the music that made it great.