Jump 5

Jump5 is the ebullient sound of bubble gum popping. Tailor-made for radio play, these kids exude an infectious, school's-out-for-summer vibe -- you couldn't knock 'em if you tried. "Wonderful" is the sweet-as-pie single, and the cover songs are pretty impressive, too. But don't linger too long on "Do Ya" or you will be singing it everywhere.