The Goldberg variations were commissioned in 1741 by Count Kaiserling, who could not sleep. They were to be played to him in bed, by Herr Goldberg. I wonder how Bach felt about this. Glenn Gould's 1981 recording of the Variations is very different from his 1955 recording. I like listening to them back to back. In '55 he was possessed; 26 years later he's in possession.