watching ernesto work diligently like a surgeon on this piece. >> now we want to put these in. >> but in the spirit of rachael ray and cooking shows everywhere, let's just fast-forward to the end. >> wow! that is so not what i was expecting. i mean in a good way. like you just were spraying stuff. it looked like you were making it up as you went along. >> it's pretty calculated. >> i can tell now. it's very calculated. art really distills words into these powerful images. >> i think it's an internal thing. people have to begin an internal dialogue with themselves and try to understand themselves and themselves in the context of history too, you know. >> it's great, man. now, ernesto isn't the only artist using creativity to provoke change. i'm dropping in on the band las cafeteras, who uses their music to tell the story of their people's past, present, and future. ♪ >> what's up?