Kelly Clarkson

from Pitch Perfect-Kelly Clarkson's mega hit from 2004 Since U Been Gone (From Pitch Perfect) rocks out in this A Cappella rendition from the Pitch Perfect soundtrack.

From Kelly Clarkson's fifth album Stronger and also covered on Glee this mid-tempo pop hit explores themes of acceptance self-worth and inner beauty in ways that are instantly appealing to teens and young adults. The vocal hook adapts well to choral and the dance groove lends itself to contemporary staging.