Building and Over-building the Hype

Bands are receiving unprecedented levels of hype, thanks to the confluence of Internet file-sharing, blogs, and social networking sites like MySpace. But when does simple publicity become over-hype? Also: the so-called "barefoot diva," Cesaria Evora. From her tiny island nation of Cape Verde, she has exported songs of longing all over the world. Her new album, "Rogamar," pays a tribute to the sea. And pianist Stuart Isacoff explains what Chopin and Duke Ellington share in common.