Second Edition

Play-Tonics

The Happiness Boys

Frank Luther

The Gas House Gang

The Merry Macs

Forest & Crispian

The Boston Common

The Mid-States 4

Тимати

The Jim Dandies

The Great British Barbershop Boys

Happiness Emporium

The Tufts Beelzebubs

Auto Towners

The Merrymakers

The Johnny Mann Singers

The San Francisco Storm Door & Whale Oil Co.

The Golden Gate Four

Quartz Precision

Backroom Joe And The Boys

The Brigadier Quartet

Gem City Chapter

Helen Clark

The True Tones