The unexpected coup of High School Musical's first soundtrack took a hammer to the collective piggy bank of the tween market; the sequel wisely stays the course, alternating chirpy and syrupy pop songs that are rainbow-sprinkled with urban touches. Driven by the shiny-faced plot, the songwriting teams -- A-list vets of au courant teen idols -- supply fluffy treatises on the triumphs and trials of puppy love that are squeaky clean in both concept and execution. A favorite? The slightly sinister, Timberlake-lite "Bet On It."