When I read the title of the thread and saw the video I immediately thought of Rick Wakeman the progressive rock keyboard wizard of Yes and frequently considered as one of the top 3 or so rock keyboard players (my favorite rock keyboard player). I have had the fortune of seeing Rick perform quite a number of times with Yes and Anderson, Bruford, Wakeman, and Howe. There are so many videos of Rick on You Tube and many of such poor quality that I found it difficult to select one. But, and this is certainly not of Rick in his younger days and when he was surrounded by some of the much more primitive Mini Moog synthesizers, etc. But, check this out as you watch Rick's hands: