This week the late-night yuk/yakfest The Colbert Report has had all musically inclined guests, with performances by Bon Iver, Florence + The Machine, and Talib Kweli; last night the host took his turn when he handled vocal duties on “Charlene II: I’m Over You,” a collaboration with the Jack White-shepherded goth-garage quartet The Black Belles. In a slick bit of tv/retail/Summer Friday synergy, Colbert and White will sell the single (on tri-colored vinyl!) when Third Man Records’ record store on wheels parks itself at The Lot at The High Line, located at W. 30th St. and 10th Ave., later this morning. “The Rolling Record Store opens at 11 and the jams get kicked out soon after,” according to Third Man, so get cracking. (Those of you who can’t get to the west side in time can also buy the single online.) Clip of “Charlene II” after the jump.