Lately, Led Zeppelin/Them Crooked Vultures bassist John Paul Jones has been spending a lot of time hanging out with blues singer/guitarist Seasick Steve.  At the iTunes Festival in London Saturday,  JPJ joined Jack White (White Stripes, Raconteurs, Dead Weather) and Alison Mosshart (Dead Weather) onstage with Steve to jam on Mississippi Fred McDowell’s Write Me A Few Of Your Lines.  Hang on for an incredible music moment: