Playing Bach, But Backwards And Upside Down

A computer playing the Goldberg Variations backwards sounds, yes, like a counter-counterpoint, but “at the same time, it sounds eerily familiar, starting with the upside-down Aria — the theme developed over Bach’s 30 variations. The slowly ascending notes in the lower staff of Bach’s original, which outline a G major triad, become, in the upside-down version, a graceful falling figure in the top line.” – The New York Times