Nat & Alex Wolff

Kid-rockers Nat and Alex Wolff hail from the Nickelodeon show The Naked Brothers Band. Their brand of earnest and, er, nakedly emotional pop—featuring Nat's prepubescent pipes—recalls Hanson and other jangly family outfits of years past. The brothers' new album (due June) is Black Sheep, and according to Nat, it's more sophisticated than previous work. Hmm.