Piano Technique: A fire and ice approach to learning pieces at breakspeed tempo

One of my Oberlin Conservatory piano teachers regarded Vladimir Horowitz as a fire and ice player. He referred to the maestro as having the uncanny ability to turn out a hot performance with a cool demeanor. (The physical control, of course, was AMAZING!) Example: http://www.youtube.com/watch?v=75ZAOwgzoAE Same applies to Yuja Wang, pianist, who delivers a sizzling…