Jason Aldean turned to one of Toby Keith’s for a tribute during Thursday night’s ACM Awards. The legend’s son and — for the first time — wife watched from the crowd. Keith, who died from complications of stomach cancer on Feb. 5, was a good friend of Aldean’s. One of his final public appearances was at an Aldean concert last year. Related: 2024 ACM Awards Red Carpet Pictures: See Country Music’s Best Dressed Seated on stools, the singer and two acoustic guitar players gave a more soft-spoken performance of “Should’ve Been a Cowboy,” from Keith’s self-titled 1993 debut. It was slow and personal…