No class about Bach would be complete without some reference to the late pianist, Glenn Gould (1932-1982). The world lost Gould much too young, a great loss for us all. The first 6 or so minutes are mostly interview; then, Gould launches into his performance of Bach's Goldberg Variations.
"Theme and Variations" is a type of composition in which a basic theme is performed, followed by two or more short movements in which that theme is presented differently. They are fun for both listener and performer. There are thirty variations in this piece. Whew!