 The episode featured cover versions of " Teenage Dream " by Katy Perry , " One Love / People Get Ready " by Bob Marley & the Wailers , and mash @-@ ups of The Rolling Stones ' " Start Me Up " with Bon Jovi 's " Livin ' on a Prayer " , and The Supremes ' " Stop ! In the Name of Love " with En Vogue 's " Free Your Mind " . All of the songs performed were released as singles , available for download , and " Teenage Dream " and " One Love / People Get Ready " are featured on the soundtrack album Glee : The Music , Volume 4 . " Teenage Dream " was later also included as the opening track on the seventh soundtrack album , Glee : The Music Presents the Warblers . The background vocals of " Teenage Dream " were provided by collegiate a cappella group the Beelzebubs from Tufts University . 
