The Avett Brothers are legit now: Their major label debut, I and Love and You, is due out on Sept. 22, after they got signed by Rick Rubin himself to Columbia. The band recently dropped by My Old Kentucky Blog's Laundromatinee show to perform three songs, including I and Love and You's countrified "Laundry Room." The performance is all acoustic, so things are predictably twangy. To see the performances of the other two songs, go here.