Brie Larson grew up on film sets, surrounded by professional entertainers for most of her young life. Maybe that explains why 15-year-old Larson is so comfortable making the transition from actress to pop star. She starred in last year's comedy Sleepover and was also featured in the Disney Channel movie Right On Track. Now, Larson is releasing her first album and has already finished a touring stint with platinum-selling artist Jesse McCartney. Larson wrote 11 of the 13 songs on Finally Out of P.E. The songs are based on her personal experiences and cover a range of topics from the trials of school gym class to not having self-confidence.