the king is acclaimed by shouts of vivat vivat vivat rex the bishop of st david 's and the earl of jedburgh call on the people to witness the anointing of the crown prince with holy oil the anthem `` i was glad '' by henry purcell the crown prince swears his solemn vows and is crowned as king the national anthems are sung : mae hen wlad fy nhadau ( oh , land of my fathers ) god save the king `` the prince is dressed in a robe of pagan , anti-establishment orange and imperial , ecclesiastical purple and wrapped in the golden fleece and then the coronation vows are administered by the bishop and others .