The progressive metal outfit Ayreon is Dutch multi-instrumentalist and songwriter Arjen Anthony Lucassen (ex-Vengeance) with a cast of collaborators and musical guests that changes from project to project. Ayreon albums are large-scale concept epics or metal operas, featuring different vocalists for each character. Lucassen formed Ayreon in 1994 and released The Final Experiment in 1995. Actual Fantasy was released in 1996, and Ayreon got more elaborate with the multi-part concept album Universal Migrator (2000). 2008's 01011001 featured 17 vocalists, 2013's globally acclaimed...