Stewart, a fearless champion of racial integration in soul music, was described by the Stax Museum as ‘an architect of the Memphis Sound.’Jim Stewart, the co-founder of Stax Records, died yesterday (5) at the age of 92. His passing was confirmed by another storied member of the Stax family, hit songwriter David Porter. Stewart paved the way for, and presided over, the immense and worldwide popularity of Stax and its wealth of household soul names. His standing was reflected in his 2002 induction into the Rock and Roll Hall of Fame, by representatives of two of the company’s most celebrated...