said ♪ >> the stones clearly wore their heart on their sleeves for blues and r&b. you can hear traces of delta blues inside of keith's guitar. ♪ they tried to be as authentic to the core as possible, even so much that their first few american recordings were done in chess in chicago. ♪ the dogs begin to bark ♪ the hounds begin to howl >> we've got to get the chicago kids used to rhythm and blues. that's where it started. you know, the white people over there know nothing about rhythm and blues at all. >> because it's negro music, isn't it? >> in america, even in the black community had abandoned certain aspects of black culture.