Trombonist David Whitson was active as a session player in England from at least the '70s onward. Like many of his fellow for-hire instrumentalists, the majority of his contributions remain shrouded in obscurity. Nobody was really keeping track of who was playing on what -- and when they tried to things don't get any more clear, a good example being the botching of credits on both the original releases and reissues of the Barclay James Harvest Band. ~ Eugene Chadbourne, Rovi