If nothing else, those who catch The Conjuring 2 this weekend will come away humming this 1961 Elvis Presley song, which was first performed in Norman Taurog’s cinematic classic Blue Hawaii. Little-known factoid from Blue Hawaii Wikipage: “Producer Hal Wallis would use the box-office returns from Blue Hawaii to finance an upcoming Wallis film, 1964’s Becket, starring Richard Burton and Peter O’Toole.”