Only the most dedicated UFO fan could possibly keep track of all the live releases that have surfaced over the years. Many of these live recordings were not necessarily approved by the band, and as a result, some have been good, and some have been downright stinky. Finally, the UFO lads have taken steps to regain control of their concert recordings, by issuing a mammoth six-disc box set, 2009's Official Bootleg Box Set. UFO have always been one of those groups best experienced on the concert stage, as evidenced by 1979's Strangers in the Night, which is widely regarded as one of hard rock/heavy metal's all-time great live sets…