NASHVILLE, Tenn. (AP) - Grammy-winning duo The Civil Wars are calling off their upcoming tour dates, citing irreconcilable differences.

The folk-pop duo Joy Williams and John Paul White released a statement Tuesday announcing that they could not continue touring because of "internal discord and irreconcilable differences of ambition."

They added that they hoped to have new music in 2013.

Williams and White are both married, but to other people. Williams had a baby this summer with husband Nate Yetton, the duo's manager.