Ayreon is actually Arjen Anthony Lucassen (the similarity to his first name is, I have been told, coincidental). His projects are an example of great music which does sell very well (especially in Germany and the Netherlands). I have included also what is usually referred to as the first Ayreon album, The Final Experiment, but actually the title of the album is Ayreon (The Final Experiment) and the artist is Lucassen himself.
In addition to the reviews, there is a very extensive interview done with Lucassen at my house. Also I've included a number of related projects and musicians, but only those that occur regularly on his projects.