but 69-year-old charlie musselwhite and 43-year-old ben harper have a lot in common-- most of all, aof the blues. ♪ their recent album, "get up", and their ongoing tour show off different shades of the blues, including country acoustical and chicago electric, and make a case for the music as a living, renewable tradition. on a tour stop in washington recently, musselwhite, who was born in mississippi and raised in memphis, told us it started early. >> the environment i grew up in, there was all kinds of music: hillbilly music and rockabilly, great gospel radio-- memphis had probably the best gospel radio-- and blues. and i liked any music that was from the heart, that had feeling, but blues sounded like how i felt. >> brown: what's that mean? how did you feel? >> well, i was a lonely kid. i didn't have any brothers and sisters. my dad had left and my mom worked. i was alone a lot. and blues is my comforter. >> brown: for ben harper, music was in the blood. his grandparents and parents all played and performed, and the family has owned a music store in claremont, california, since 195