Brightman, best known for her appearances in shows in London's West End including "The Phantom of the Opera", will sing with Liu Huan a specially commissioned "theme song" which will make up part of the three and a half hour ceremony.
The entertainment will begin at 5:45 p.m. and the ceremony proper, featuring 15,000 participants, will follow from 8 p.m. for three and a half hours.
