By Ariana Bacle
August 05, 2014 at 04:11 PM EDT

After over a year on hiatus, The Civil Wars have officially split up.

Joy Williams and John Paul White, the singer-songwriters who comprise The Civil Wars, first canceled tour dates in 2012 citing “internal discord and irreconcilable differences of ambition.” At the time, the duo was recording its next album, which went on to top the country music charts when it was released in August 2013. Despite the album’s release, the two still didn’t tour, and White gave no promotional interviews about the record at the time.

While neither Williams nor White have clearly defined what went wrong between the two—who are both married, not to each other—Williams told EW in 2013 that “over time it became apparent that we both wanted different things.”

In a statement released Tuesday, Williams expressed her pain over the break-up: “I am saddened and disappointed by the ending of this duo, to say the least,” Williams said. “JP is a tremendous musician, and I will always be grateful for the music we were able to create together.” Over the band’s four-year run, they were nominated for multiple CMT Music Awards and won four Grammys.

As a last farewell, the two released their cover of “You Are My Sunshine,” originally a B-side on 2011’s “Barton Hollow” vinyl, as a digital download. “I sincerely hope that ‘You Are My Sunshine’ will be accepted as a token of my gratitude for every single person that has supported our duo throughout the years,” Williams said in the statement. “I’m so thankful and my heart is full.”

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