‘Sing 2’ cheerfully serves up another round of animated karaoke for kids

Like the first movie five years ago, "Sing 2" mostly works on split levels, offering a jukebox assortment of popular songs that parents will recognize, and having cute animated animals belt them out to divert children. The result is a breezy exercise in karaoke for kids, where the soundtrack beats the movie and a lot of stars again lend their voices to the chorus.