>> in some cases, prison sentence allows an inmate to discover a talent he might never have known he had. for clay lopez, at california state prison corcoran, doing time led him to the harmonica. >> i'm almost 50 years old and i'll be over 50 when i get out. so i don't have a career or anything, so i thought, well, you know, if i learn to play the harmonica, i can at least pay my own rent when i get out there, even as a street musician, if i'm sober. i think i'll do okay. ♪ i started to play the harp better when i lost this tooth. i started getting the sound the way it was supposed to sound. i was never so happy to lose a tooth. makes this harp sound real good. ♪