From NPR’s Jazz Night in America:
Known as the “queen of the organ,” Shirley Scott was one of several Philadelphians who developed the electric Hammond B-3 into a viable instrument for a soulful, bluesy style of jazz. With dozens of recordings to her name, she was already a major voice when she became the leader of the house band at Ortlieb’s Jazzhaus. Among the young players who timidly found their way onto the stage at Ortlieb’s were Warfield and Stafford — and, in doing so, they got a lot more than they bargained for.