(ABC News) – Here was the deal: Make a video showing how your high school roars to her hit song, “Roar,” and Katy Perry picks her favorite. It was an agonizing choice for Perry among the five finalists, but in the endLakewood High School in Lakewood, Colo., roared the loudest. Their prize? A live performance from Perry at their school airing on “Good Morning America” – and her 29th birthday, no less! Here are our favorite moments from her “Roar”-licious concert!