I'm currently in the middle of Peter Pettinger's Bill Evans: How My Heart Sings (Yale UP, 1998), and a theme that has emerged so far is Evans' fondness for Bach. For example, for Evans' senior recital in college on 24 April 1950, the pianist chose to play -- among other pieces -- the B-flat-minor prelude and fugue (BWV 867). His appreciation, particularly of the Well-Tempered Clavier, apparently continued through the years.
This is, of course, just a little bit of musical trivia; however, it's interesting to me to see to what Evans himself liked to study and to play. It also says a lot about Bach's genius.