Four Parts, No Waiting investigates the role that vernacular, barbershop-style close harmony has played in American musical history, in American life, and in the American imagination. Starting with a discussion of the first craze for Austrian four-part close harmony in the 1830s, Averill traces the popularity of this musical form in minstrel shows, black recreational singing, vaudeville, early recordings, and in the barbershop revival of the 1930s...