This year's Petty Fest in Brooklyn, NY boasted a really fun line-up: everyone from Norah Jones to Will Forte was on site to sing and perform classic songs from Tom Petty's discography. Tyson Ritter, from the All-American Rejects was also there, and here's a fan video of him howling to "American Girl".
He's probably not singing about the girl that's been trying to sue him since July.