Ken Tucker

Taylor Swift turns 21 in December, and she'll still be one of the youngest country singer-songwriters to have achieved massive success. Her songs operate as both faux-confessionals and universal anthems. Her new album, Speak Now, is already a best-seller.

Bruno Mars is a 25-year-old singer, songwriter and producer who's worked on hit singles for numerous hip-hop and soul artists. Rock critic Ken Tucker says Mars' new album, Doo-Wops and Hooligans, is "an impressive, varied and intense experience."

The Dwight Twilley Band scored its biggest hit, "I'm on Fire," in 1975, and then struggled for years to achieve stardom that never arrived. Now the band's lead singer, Twilley, is back. Rock critic Ken Tucker reviews his new album Green Blimp, which also features vocals by Susan Cowsill.