Music: Christina's World

A new teen star has a voice that goes way beyond mere kid stuff

Sometimes the gods of pop music like to play a little joke. Browsing the aisles of a Times Square record store the other day, Christina Aguilera got quite a surprise. Unrecognized amid the hurly-burly of fellow shoppers stood one of her heroes, Fred Durst, leader of the red-hot rock-hop band Limp Bizkit. Aguilera zeroed in, angling for an autograph, but it was not to be: her quarry slipped into the crowd and scurried away.

What Durst didn't know is that the petite blond with the big eyes was not just another fan but one of the most strikingly gifted singers to...