Reverend Billy, the flamboyant "altar-ego" of New York performance artist William Talen, celebrates 20 years of crusading with his Stop Shopping Choir.
Bob Fass hosted the influential New York City radio show Radio Unnameable for more than 50 years. It served as a megaphone for the 1960s counterculture and boosted folk and blues artists.
American-made violins are often regarded as inferior to European ones, but guitarist David Bromberg knows their value. So does the Library of Congress, which is acquiring his impressive collection.