Kate entered the cathedral on her father's arm while an organist and a brass quartet performed Clarke's Trumpet Voluntary. She chose this traditional piece to complement the regal ceremony venue; she also liked that it was Princess Diana's processional when she wed Prince Charles in 1981—the year Kate was born.
"I remember standing in the back of the church with my father, waiting for the music to start. As the cathedral doors swung open and the trumpets sounded, he turned to me and said, 'Let's just wait a minute and take this all in—it's awesome, isn't it?'" —Kate