Audio problem: During the assassination attempt on Don Corleone, one of the assassin's last shot makes no sound but smoke is coming out of the gun barrel. (00:44:55)
Audio problem: When Vito Corleone is brought back from the hospital and he is upstairs in his bedroom with his other family members, after his grandson Frank gives him his gift, the baby who was just crying has his mouth completely closed while the audio has him still crying as they leave the room. (01:33:00)
Audio problem: When Carlo gets strangled in the car and kicks the windshield the sound of breaking glass can be heard before it actually happens. (02:41:05)
Chosen answer: The mattress montage music is called "This Loneliness." It is written and performed by F.F.C's father.