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Sex, samba and rebellion came together to form Tropicalia, an aggressive modern arts movement born in late-60's Brazil and now being celebrated in an exhibit at the Bronx Museum of Art. Today, a look at Tropicalia's vibrant musical legacy with guitarist and composer Arto Lindsay, and with scholar Christopher Dunn. Also on the show: Combining electronica, rock and jazz, the Dub Trio pay homage to the original dub style, inspired by the Jamaican electronics and sound engineer, King Tubby. The group performs live in the studio. And finally: Some Christian music fans believe digital downloading is a way to spread the Word. Other voices tell them: Thou shalt not steal. Los Angeles Times writer Geoff Boucher explains.