Catfight for the rest (Dancer demo) (is this a genuine demo)?

http://www.youtube.com/watch?v=dxbWkvpB72k&list=PL63D95BD6AA0CCC88

I've never heard it. Anyone has some info on this. Is it fake or genuine. It sounds like a real demo listening to the guitar and bass bits.

Sorry Dave, this isn't real, although it's a real song, but it isn't Queen........it comes nowhere Queen....

Tom