In the Powell interview, he mentions his custom made Double Keyboard controller. There’s a close up of it on YouTube in the Utopia video of Seven Rays. You can see it here:
http://www.youtube.com/watch?v=Br8JVZRjntQ
It’s out of synch, but there are a couple shots of the cool gear. Plus it’s a great song from the more proggy era of Utopia (my personal fave).
-andrew bunny