ON THE MORNING of September 5th, Patrick Carney and Dan Auerbach walked into Auerbach’s Nashville studio, picked up their instruments and became the Black Keys again. By season’s end, they had finished their ninth album, the self-produced “Let’s Rock” (yes, that’s really the title). As usual, they created the entire album’s worth of songs from scratch in the studio, with nothing written in advance and very little discussion. It had been five years since they recorded together, but that didn’t seem to matter at all. “We fell right back into it, really, day one,” says Carney. “We wrote two songs the first day. We’re just fucking around, and that’s what comes out.”
“It’s this magic that happens with Pat and I,” says Auerbach, who started a new band, recorded…
