Levin is a teacher in the Music Department of Dartmouth College and a longtime follower of the music of the Celtic lands, the Balkans, South Siberia, and other cultures. His new book "The Hundred Thousand Fools of God: Musical Travels in Central Asia" traces how the music of a culture lives through and reflects the lives of its people. He looks at how the Russian conquest of Central Asia at the end of the 19th century affected the music of the area.