Because I've been listening intently to Bach's Well-Tempered Clavier (Books I and II) for a year now, I was thrilled to see a new book on the subject: Bach's Well-Tempered Clavier: The 48 Preludes and Fugues. I was disappointed that someone beat me to putting it hold at the music library -- but I need to be patient! I'm hoping the book will explicate some of the wonders of the music and pinpoint the whys and hows of the power of the WTC.
(Hmmm...using the Amazon "see related items" feature, I found another book that is currently on the shelf and can therefore be in my impatient hands sooner: Bach: The Goldberg Variations.)