 Due to the presence of the a cappella group , the episode features several songs . The group sings the Rose Royce 1976 single " Car Wash " , the 1983 Culture Club song " Karma Chameleon " , and Edwin McCain 's 1998 hit " I 'll Be " . The group also sings Cornell 's alma mater . Pam and Jim later get in an argument about the 1962 novelty song " The Monster Mash " . During their Skype @-@ argument Broccoli Rob mentions that he collaborated with Trey Anastasio , the frontman for the jam band Phish . During the seventh season episode " The Sting " , Andy mentioned that Broccoli Rob and Anastasio had collaborated on a song together . 
