During the coronation the camera shot looking at Adrian while he's giving his speech shows an empty chair in the front row in front of the lady wearing gold. The camera shot changes to a camera behind Adrian looking out at the audience and there is a man sitting in that chair. He is there until just before Adrian says "so much for listening" and then he's back and then gone again when Adrian gets crowned.
Children singing Frère Jacques and Lavender's Blue but the music they're looking at is unrelated to those songs.