you know, I just remembered something- In that Great Pianists of the Twentieth century video, in the opening piece (The Prelude to the Transcendental Etudes), the guy who played it was chewing on something, and making these huge mouth movements in all directions. --> you can see it in the reflection of the guy's face in the piano.
well, thanks for the input, I should probably not chew gum--> some will find it annoying, like wearing a hat while playing..But I dont mean anything by it- it just helps me concentrate.
donjuan