Ann M. Pescatello presents the first biography of Charles Seeger, who was a force in American music for most of the twentieth century. Part composer, teacher, performer, musicologist, bureaucrat, and inventor-Seeger's ninety-two year life touched many people and many areas of American music. As both a traditionalist and champion of the new, he established the University of California's music department and the nation's first curriculum in musicology, and taught at the Institute of Musical Arts (later Julliard), and at the New School in New York. He was also a music activist-defending the artistic value of American folk music, and seeking global cooperation for musical enterprise at the Resettlement administraion, the WPA, and the Pan American Union.