Complex sentence: McLaughlin performed the song at the ceremony in a recreation of the King and Queen's Ball scene from the film, where the roles of Giselle, Robert, Prince Edward and Nancy Tremaine were portrayed by look-a-like dancers.
Split into simpler sentences: McLaughlin performed the song at the ceremony in a recreation of the King and Queen's Ball scene from the film. The roles of Giselle, Robert, Prince Edward and Nancy Tremaine were portrayed by look-a-like dancers.