Although places like Vienna and New York are known as the epicenters of the classical movements of the 20th century, the West Coast was also home to some of the century’s most influential composers. Henry Cowell, Harry Partch, John Cage, and Lou Harrison helped define the sound of the West Coast avant-garde, and had an impact on musicians not just in the classical world, but also in jazz and rock music. Alex Ross, Music critic for “The New Yorker,” and author of “The Rest Is Noise” and “Listen to This,” joined us in 2015 to tell the story of some of the major West Coast avant-garde composers.