Ken Tucker

Perry has released what is commonly considered the pop hit of the summer, a song called "California Gurls." Perry has a new album, Teenage Dream, which rock critic Ken Tucker says is just one part of what he calls "the Katy Perry art project."

Stuart has been playing country music professionally since his early teens. From the mid-1980s to the early '90s, he had a lot of mainstream country-music success. But in recent years, Stuart has migrated toward an old-fashioned sound. Rock critic Ken Tucker reviews his latest album, Ghost Train: The Studio B Sessions.

Arcade Fire is a Montreal-based band that has, in less than a decade, grown in popularity from obscure indie favorite to mass-appeal group that can fill New York's Madison Square Garden. Critic Ken Tucker says the band's third album, The Suburbs, has the sweep and ambition of a rock opera.