If not for a Midwestern dance gig that ran late, the world might have been forever deprived of Ray Charles' immortal "What'd I Say." Stuck for material at the end of a long evening, the incomparable Brother Ray began to improvise -- a jazzy electric piano fill here, a steamy call-and-response retort between Charles and his captivating Raeletts there -- and before the show was through, the genius had brainstormed one of his biggest sellers of all right there on the bandstand. Subsequently captured February 18, 1959, in a New York studio by Atlantic Records engineer Tom Dowd in brilliant stereo, "What'd I Say" ran so long at nearly six-and-a-half minutes that it had to be split on both sides of an Atlantic 45 for mass consumption. It was one of the most suggestive pieces ever aired on pop radio up to that time, the sexy banter between Charles and his female vocalists throughout part two becoming more ribald on every break (their sweaty sighs and groans left little to th