Tobias Sammet's Avantasia

Avantasia is a German supergroup metal opera project created by Tobias Sammet, vocalist of the band Edguy. It has been characterized as a rock opera, as it features the contributions of various vocalists and musicians and it consists of concept albums. The name is a portmanteau of the words "avalon" and "fantasia" ("fantasy") and describes "a world beyond human imagination" (a quotation from the booklet).