 Quinn ( Dianna Agron ) , Mercedes ( Amber Riley ) and Sam ( Chord Overstreet ) are members of a Christian club called the God Squad and decide to raise money by performing singing telegrams for Valentine 's Day ; their newest member is the previously home @-@ schooled Joe Hart ( Samuel Larsen ) . The group serenades Rachel with " Stereo Hearts " at Finn 's behest . Santana then hires them to sing for Brittany , which sparks a discussion among squad members on the morality of homosexuality ; Joe must decide whether he is comfortable delivering a singing telegram for a gay couple . 
