There are also non-contiguous examples. Smack in the middle of Wagner's Tristan und Isolde you hear the final theme that signals they are about to win the main boss battle. Then one of the NPCs screams right before the final chord. The audience instead hears the danger signal and realizes it was a fake boss and there's another two hours of game play. Only when Isolde beats the final boss at the end do we get the final chord.