This second volume moves us chronologically into the 1930's, a time when slicker, smoother, more polished and sophisticated vocal groups were gaining ascendancy in pop quarters. The groups included here show some of the barbershop stylings and imitations of instruments made popular at the time by groups such as the Mills Brothers. These groups were capturing the imaginations of popular fans and Harlem hipsters alike with their smooth, sweet and sometimes swinging harmonies.