Rock the House (2011)

Workaholic lawyer Max Peterson escapes the ax at downsizing, at least for now, but sees his workload tripled. Since his divorce, his daughter in alternative custody feels neglected and blames his frequent absence. Youth friend Pete convinces him to help revive their high-school band. Karen's best shot to win class hunk Ryan's favor is helping him organize the prom, but keeps being out-staged. Then the band is disabled, and Max's the only alternative, but the date clashes with a crucial client's major court case.