Hello...this is the artist, Angela Hewitt, that my teacher saw in person playing the Well-Tempered Clavier in two separate showes, and referred to in music appreciation class. I found this article about her from The Guardian that you may be interested in reading regarding the Art of Fugue:
Angela Hewitt: My battle with Bach
http://www.theguardian.com/music/2012/sep/19/angela-hewitt-battle-bach
Thanks! I’ll look at it this afternoon.