text:  The Nitty Gritty Dirt Band, the enduring progressive bluegrass country ensemble led by John McEwen and Jeff Hanna. There were the 1968 hit song from Canned Heat's Alan Wilson, an acoustic version of Going Up Country. What happens when a Mississippi Delta blues band plays country? Well, you get Sunshine Twist. It's Big Jack Johnson and the audaciously titled Jelly Roll Kings with their groove on You Are My Sunshine.