 Whilst still performing the role of Elphaba, Ellis appeared at the launch of Royal Caribbean International's biggest ship MS "Independence of the Seas" on 30 April 2008, opening its christening ceremony in the ship's theatre with the song "What a Wonderful World" and the British national anthem as it docked in Southampton.She also performed alongside Idina Menzel, Adam Pascal, Josh Groban, Clarke Peters, Marti Pellow and David Bedella in a two-day limited engagement of "" at the Royal Albert Hall on 12 and 13 May 2008.She played the role of Svetlana and upon reflection, stated that to star at the Royal Albert Hall, work with an "amazing" company and sing alongside those particular cast members "was a dream come true."