This would beat Somnium in length.
You know, Vangelis is great. He simply picks projects and events that he likes, no matter how big or how obscure they are.
In a recent interview he said that he makes music every day. Only a small percentage of what he creates gets released.
I bet there is a lot of cool music among that. For example, some of those "lost" pieces on the Blade Runner trilogy album (second disc) are fantastic. Released 25 years after the movie!