WHY YOU CAN'T IGNORE KANYE.

Profiles rapper Kanye West, who is challenging the way rap thinks about race and class. Background on West, who started out as a record producer; Attitudes of record company executives, who had no idea how to market West; West's deal with Roc-A-Fella; Success of his debut album, "The College Dropout"; Distinctiveness of his rap music, which focuses on African-American middle-class angst; Biographical and career details.