While Jamie Hince departed for his honeymoon over the weekend, Kills partner Alison Mosshart kept musically busy with one of her old Dead Weather bandmates: Jack White joined Mosshart and Led Zeppelin’s John Paul Jones for a cover of Mississippi Fred McDowell’s “Write Me A Few Lines,” led by Third Man Records-signed blues man Seasick Steve. Thanks to Dementian, here’s a pro-shot clip from yesterday’s surprise iTunes Festival performance.