Why Bach Moves Us

I've convinced a few people who were fans of rock guitarists like Blackmore, Malmsteen, Rhoads and EVH to listen to teh Prelude #2 in Well tempered Clavier and describe the commonality. A couple of them opened their eyes wide and went "Woah".

Review of the book Bach: Music in the Castle of Heaven by John Eliot Gardiner. A couple other reviews in the NYTimes http://www.nytimes.com/2013/12/04/books/bach-music-in-the-ca...

...and the Washington Post http://www.washingtonpost.com/entertainment/books/book-revie...

The Bach piece that most moves me is the 2nd movement (Largo) of Harpsicord Concerto No. 5 in F-minor (BWV 1056) here played by Glen Gould in 1957 http://www.youtube.com/watch?v=R0zPokdN2wg [video]

What Bach work moves you?