The Monroe Brothers began as a trio of Birch, Charlie, and Bill Monroe on fiddle, guitar and mandolin respectively, performing square dance songs as well as traditional and gospel numbers. In 1932, Bill and Charlie began touring professionally with the WLS touring company as dancers, appearing with the Hoosier Hot Shots and Red Foley among others, and in 1934 secured the sponsorship of the Texas Crystals Company, a manufacturer of laxatives. The association provided the Monroes with a steady stream of radio work for over a year until competing laxative maker Crazy Water Crysta...