This clip is from a Canadian documentary called “Electric Jam” and made I think in the 80’s. Its off an old video of mine there are a few more clips of Bob which I will also post providing there are no copyright problems.
The complete video is very interesting featuring many rare and various examples of electronic synth sound creation and musicians and is a well made and absorbing documentary. But I have not as yet found any reference of it anywhere.
Very interesting! 
Great find ! 
Too bad it’s so short… We miss you Bob. 