Born to Rock, by Gordon Korman, 2006

Leo Caraway knew at 10 that his dad wasn't his bio-dad, but not until 17 did he discover that the name on his birth certificate belongs to King Maggot, lord of the punk rock scene, and lead singer of Purge, a hard-edged 80's band. But it takes unfairly losing his scholarship to Harvard for Leo to seek out his millionaire bio-dad in hopes of tuition assistance, and that's how Leo, an erstwhile member of the Young Republicans club, finds himself touring with Purge's summer comeback tour. Never a dull moment, lots of aging rocker humor. Romance was the novel's flat side, some teen sex present, not explicit but also unproblematized.