Notice how FFC always throws in some religious theme or music when murders are about to occur--Anthony's baptism and the Great Massacre of 1955; Fredo's Hail Mary before he's killed; the Easter Mass from "Cavalleria Rusticana" when all the bad guys are being killed...
Yes, and notice in II we hear Fredo say MOST of the "Hail Mary" if you say the rest of it in the same cadence, the shot does not go off until he would have said, "...now and at the hour of our death. Amen."
Nice touch
