Imagine Dragons - It's Time - Peter Hollens & Tyler Ward (A cappella)

- StumbleUpon Most graduates leave high school with an encouraging speech from the valedictorian or principal. North Penn High School's class of 2012 received something a little more special — a 12-minute walk through their entire school career, from kindergarten to senior year of high school, in the form of popular songs. SEE ALSO: Watch This Drummer Tear Through Pop Music History [VIDEO] The medley is performed by the trio String Theory. It starts in 1999 with Backstreet Boys' "I Want it That Way," leading up to 2012's hit song by Fun, "We Are Young." And of course, anyone who's been waiting to graduate since 2000 knows that Vitamin C's "Graduation Song" will inevitably appear.