A tale of passion and obsession from a philosophy professor who teaches himself to play Bach on the piano. Dan Moller grew up listening to heavy metal in the Boston suburbs. But something changed when he dug out his mother's record of The Art of the Fugue, inexplicably wedged between 16 ABBA Hits and Kenny Rogers. Moller became fixated on Bach and his music, but only learned to play it for himself as an adult. In...