SAM & DAVE

Sam & Dave were an American soul and rhythm and blues (R&B) duo who performed together from 1961 through 1981. 
Sam & Dave are members of the Rock & Roll Hall of Fame, the Grammy Hall of Fame, the Vocal Group Hall of Fame, and are Grammy Award and multiple gold record award winning artists. According to the Rock & Roll Hall of Fame, Sam & Dave were the most successful soul duo, and brought the sounds of the black gospel church to pop music with their call-and-response records. Recorded primarily at Stax Records in Memphis, Tennessee, from 1965 through 1968, these included "Soul Man", "Hold On, I'm Comin", "I Thank You", "When Something is Wrong with My Baby", "Wrap It Up", and many other Southern Soul classics.
Nicknamed "Double Dynamite", "The Sultans of Sweat", and "The Dynamic Duo" for their gritty, gospel-infused performances, Sam & Dave were one of the greatest live acts of the 1960s.

http://en.wikipedia.org/wiki/Sam_and_Dave