'String Theory' is a three man string group at North Penn High School, and they may have put together one of the best graduation tributes for the class of 2012.

The group grabbed one song from each year of their classes school years, and showcased it during commencement.  The best part is how the class starts to sing along with almost every single one of the songs.

Not only are these guys talented, they gave their class a moment that none of them will forget.  The complete list of songs is below the video.

String Theory - Circle Of Life

The songs are covers of:
Circle of Life- Disney
1999- I Want it That Way- Backstreet Boys
2000- All The Small Things- Blink-182
2001- Follow Me- Unkle Kracker
2002- Lose Yourself- Eminem
2003- Hey Ya!- Outkast
2004- Yeah- Usher
2005- Since U Been Gone- Kelly Clarkson
2006- Crazy- Gnarls Barkley
2007- Hey There Delilah- Plain White T's
2008- I'm Yours- Jason Mraz
2009- Viva La Vida- Coldplay
2010- Love Story- Taylor Swift
2011- Rolling in the Deep- Adele
2012- We are Young- Fun
Graduation- Vitamin C

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