What Canadian vocalist was featured in a guest appearance on the album Haven by Kamelot?
Alissa White-Gluz Alissa White-Gluz ( ; born July 31, 1985) is a Canadian vocalist, best known as lead vocalist of the Swedish melodic death metal band Arch Enemy, and former lead vocalist and founding member of the Canadian metal band The Agonist.
Lance Ryan Lance Ryan (born 1 May 1971) is a Canadian operatic tenor, who has worked from Germany since 2005. He is known for singing Siegfried in Wagner's "Der Ring des Nibelungen", which he performed at opera houses in Europe including the Bayreuth Festival. He performed the tile roles of Verdi's "Otello" and Britten's "Peter Grimes".