Has anyone tried getting a vibration from their front teeth to see what kind of effects can be produced? I stumbled upon this today while fooling around with my Yamaha P-25F. It seems easiest with the Yamaha mouthpiece. I’m not sure what to do with it, but if I rest the end of the mouthpiece lightly on one of my front teeth, I’m getting some unusual sensations and sounds, a kind of buzzing. This may be affected by the fact that I have caps on both those teeth.