Somewhere tonight, across the country or across the sea, a singer, sitting on a stool on a pub’s corner stage, is belting out a Kevin McKrell song, and the crowd is singing along.  McKrell pioneered American Celtic music beginning in 1979 with Donnybrook Fair, playing Irish Festivals across the country and even Lincoln Center.  McKrell is also a respected painter, and some paintings may travel to Oxford with him for this evening.  Joining McKrell on this evening will be Fiddler Frank Orsini and bass player Arlin Greene.