Call them precocious, call them adorable, just don't call them the second coming of Hanson. Because this brother trio is here to rock. And they don't do three-part harmony. New Jersey brothers Kevin, Joseph and Nicholas Jonas were 17, 16 and 13, respectively, when they released their debut album in 2006. They got their start when littlest bro Nicholas, in possession of a soulful prepubescent voice, finagled a solo record deal with Daylight/Columbia. When Columbia got wind that there were two other Jonas brothers who were just as cute and musically inclined, Nick's solo act quickly became a trio, with Kevin on guitar and Joe and Nick switching off on vocals, keyboards and percussion. Their first album was a collection of hyper, hook-driven pop-punk that got the attention of tweens across America. And that got the attention of Disney, which stuck them on a bazillion soundtracks and then released their sophomore effort in 2007, all before Nick was a sophomore. OK, sorry about that one. And sorry about the Hanson crack, too -- the brothers Jonas don't mind, anyway. They're so cool, they even made a joke comparing themselves to Hanson on their second album.