Arjen Lucassen is a Dutch multi-instrumentalist musician, singer, songwriter and record producer. He is most known as the creator of progressive metal/rock opera Ayreon.
Over the years, Lucassen created various bands and musical projects. Overall, he has released twenty studio albums in project or bands in which he was the leader and main creative force: two solo albums, ten for Ayreon, one for Ambeon, three for Star One, one for Stream of Passion, one for Guilt Machine, one for The Gentle Storm, and one for Arjen Lucassen's Supersonic Revolution. He was the guitarist in two studio albums by rock band Bodine (as Iron Anthony), and in six studio albums by rock band Vengeance, and also released a cover album without any artist credited. Bodine, Vengeance, and Stream of Passion all released albums without Lucassen.