It is marvelous that Henry Cowell's life has finally been captured in a biography written by a musician who is sympathetic to his music. Unfortunately, the book is hampered by two problems: 1) The inconsistent documentation of Cowell's life, and 2) The refusal of the Oxford University Press to allow space for Sach's analyses of Cowell's compositions. One can only hope for another book to overcome the latter shortcoming.
What is here is fascinating and shows the remarkable range of Cowell's contacts and enthusiasms. John Cage called Cowell the "open sesame" of contemporary American music. He was a vital figure who championed composers such as Ives, Ruggles, and Lou Harrison. He was also the first Western composer to value the music of Iran, India, Indonesia, and Japan. He pioneered such radical techniques as tone clusters and the manipulation of piano strings in his early music, which Bartok and Berg both asked Cowell's permission to use. As a theorist, he elevated melody and rhythm above harmony opening up some of the more revolutionary ideas of modern music. Not bad for someone whose highest officially completed level of education was the third grade!