Arjen Anthony Lucassen is a Dutch singer, songwriter, multi-instrumentalist musician and record producer best known for his long-running progressive metal/rock opera project Ayreon. Lucassen started his career in 1980 as the guitarist and backing vocalist of Dutch band Bodine as Iron Anthony, before joining Vengeance in 1984. After eight years he left the band, wanting to go into a more progressive direction, and released two years later an unsuccessful solo album entitled Pools of Sorrow, Waves of Joy under the nickname Anthony.

Progressive metal is a broad fusion music genre melding heavy metal and progressive rock, combining the loud "aggression" and amplified guitar-driven sound of the former with the more experimental, cerebral or quasi-classical compositions of the latter.