Thanks for posting, enjoyed that, but as Sean M.H. suggested you may need to look elsewhere for "the edge of what is humanly possible." Without getting into music as competitive sport it might help if such claims were toned down. There are recordings of Ellington, Fats and others playing some pretty happening stride, and no doubt someone will correct me if I'm wrong, but I think Art Tatum's Tiger Rag is the commonly referenced benchmark for "the edge of what is humanly possible" if we're going to talk about such things: