http://www.youtube.com/watch?v=uoUlsQVnfjc
Rosalyn Tureck (December 14, 1914 – July 17, 2003) was an American pianist and harpsichordist who was widely hailed as an authority on the music of Johann Sebastian Bach. Glenn Gould considered her his main influence.
Here she is in a 1959 recording of Bach’s French Overture.