 " Welcome to Sacred Heart " was composed by Fordham , Marx , and Lopez Fordham considers " Welcome to Sacred Heart " to be Dr. Kelso 's song ; Kelso ( and especially Jenkins ' performance of Kelso ) being Sacred Heart 's Jerry Orbach / Robert Preston @-@ type showman , as in " Lullaby of Broadway " from 42nd Street . " Be Our Guest " from Beauty and the Beast was also cited as an influence . Filming the sequence involved over 50 extras and Busby Berkeley @-@ style top shot kaleidoscopic choreography , which was achieved with a crane @-@ mounted camera . 
