Arjen Anthony Lucassen is a Dutch songwriter, singer, multi-instrumentalist musician 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 sixteen studio albums in project or bands in which he was the leader and main creative force: two solo albums, eight for Ayreon, one for Ambeon, two for Star One, one for Stream of Passion, one for Guilt Machine, and one for The Gentle Storm. He was the guitarist in two studio albums by rock band Bodine (as Iron Anthony, and in four studio albums by rock band Vengeance, and also released a cover album without any artist credited. Both Bodine, Vengeance and Stream of Passion released albums without Lucassen.