For the A Ghost Is Born recording, Wilco was Jeff Tweedy, John Stirratt, Leroy Bach, Glenn Kotche, and Mikael Jorgensen; Jim O'Rourke, who mixed the band's previous release Yankee Hotel Foxtrot, co-produced the album with Wilco. Leroy Bach left Wilco at the completion of the sessions and the band announced the addition of two new members: Pat Sansone and Nels Cline. Sansone and Cline toured with Wilco to promote AGIB and that lineup has remained unchanged since 2004. As Tweedy said to Bob Mehr for his new liner notes, "Making that record, and then finding this lineup, that was the start of something-of having a band that can play anything. That's why, twenty years later, we're still here and still going."