The "Jamboree version" of the group comprised Ricky Russell on dobro, Johnny Dacus on fiddle and Ray Anderson on bass. "Ruby Are You Mad" marks the first time twin banjos were used on a bluegrass recording.
The "Jamboree version" of the band included Ricky Russell on dobro, Johnny Dacus on fiddle, and Ray Anderson on bass. The song "Ruby Are You Mad" showcased the innovative use of twin banjos in a bluegrass recording.