The Dark Days Behind the Black Keys' Best Album Yet

This morning, Dan Auerbach dropped his six-year-old daughter off at school, and then went home for a boxing session with his cousin, who is staying above Auerbach's garage. Now it's a clear April afternoon, and he's firing up the black BMW sedan outside his modest bungalow-style home near Nashville's Music Row, heading to one of his favorite spots for Vietnamese Pho noodles, which he eats almost every day. Auerbach cruises past the auto repair shops, laundromats and porn shops of southeast Nashville, blasting some of his recent obsessions: snarly Sixties garage rockers the Groupies, early Van Morrison deep cuts and......