This features Tommy Shannon on bass, who went on the be in Double Trouble backing Stevie Ray Vaughan. Shannon had the first of two important meetings at The Fog in Dallas in the late 1960s. There he first saw Johnny Winter. Shannon ended up backing Winter, and they formed a project known as The Progressive Blues Experiment in 1968. Shannon moved between Dallas and Austin, and saw Stevie Ray Vaughan at The Fog with Vaughan's group Blackbird. Vaughan later formed a group called Double Trouble, and in 1980 Shannon wound up taking the place of the bass player, Jackie Newhouse, after seeing Double Trouble at Rockefellers in Houston. The group could have been short-lived—Vaughan was tapped to do some guitar tracks for David Bowie (the haunting guitar on "Let's Dance", for instance), and was then offered the chance to tour with Bowie. Ultimately, Vaughan's manager turned down the offer. Vaughan, Shannon and drummer Chris Layton would stay together as Stevie Ray Vaughan & Double Trouble—and become one of the most famous blues bands of all time.