This book is a masterpiece. I don’t read much historical nonfiction, but the narrative construction of this book from primary documents of those living in the movements described is phenomenal. Throughout the book we don’t just focus on the usual four composers, but all of the musicians that surrounded them, inspired them, and were inspired by them. Truly if you have any interest in minimalism, its impact on modern music, and the music on the margins that should be credited as part of the movement, you need to buy this book.