Vangelis was interviewed in his studio NEMO in 1984 in a piece titled "Vangelis - The Man and His Music", there are a few dodgy VHS copies floating around on Youtube, but now Youtube user Nimanty has re-edited and remastered to give better quality, and now stereo sound.
Go on, treat yourself..
The Avila Brothers talk about their journey to the recent Super Bowl Halftime Show
Revisions that turned synths into brand new machines