Country/folk duo Indigo Girls [ tickets ] have lined up a fall tour to support their 10th studio album, "Despite Our Differences," which is due in stores Sept. 19.

The pair--Amy Ray and Emily Saliers--will kick things off close to their home state of Georgia, with a Sept. 30 show in Asheville, NC, launching a week's worth of performances in the southern states.

The tour will head north from there and should eventually expand to the West Coast, with additional dates expected to be announced during the initial leg of the outing.

"Despite Our Differences," Indigo Girls' first album of all-new material since 2004's "All That We Let In," was produced by Mitchell Froom (Paul McCartney, Los Lobos) this spring at Froom's home studio in Santa Monica, CA.

"Making this record was really different for us," Saliers said on the group's website. "We were all in the same room together. It was a little family experience, which is really, really different from being in a huge, cold studio where everyone's isolated. And there was a really strong trust factor with Mitchell. He has a great musical ear, particularly for harmonies and things like that. If he heard a note that didn't sit well with him, he'd tell us. It was a real exchange."

The duo also brought in a little outside help for their first album since signing with Hollywood Records. The pair worked with pop singer Pink on one of the album's songs, "Rock and Roll Heaven's Gate."

"I gave her the lyrics and the idea--a counter-melody, like a call-and-answer--and she just took it and ran with it," Ray said in a July post on the AOL Music Blog. "We finished [the song] pretty quickly, so we just sat around and talked about politics... and the president."

Indigo Girls contributed guest vocals to "Dear Mr. President" off Pink's most recent album, "I'm Not Dead."