Among the Canadian contributions to the world - apart from snowmobiles and plexiglass there is of course Glenn Gould - with all his neurosis and ability. He wouldn't let you touch his hands which he would keep dipped in a pail of hot water prior to any concert. He brought his own slumping little chair with him. He gave up public performance altogether quite early in his career. There are two famous recordings of the Goldberg Variations. One, recorded in mono in 1955 and another in 1982. I'm particularly partial to the earlier recording but to everyone his own. A video has been circulating on Youtube in the last few days with a version of the Aria and seven of the variations that more resembles the later recording and has Gould with all his eccentricities. He hummed while he played. He wouldn't stop. There are a few recordings of various works where this becomes problematic. In most cases you learn to live with it.