In the film Jimmy visits the current version of Stubb's Barbeque in Austin, which was actually the third iteration of the place. The original (which was a Texas legend and is now commemorated with a bronze statue) was in Lubbock, Texas. The first paid gig at Stubb's was The Fabulous Thunderbirds. With some construction there running late, Jimmy picked up a hammer and helped finish the drum riser just in time for the gig. Not long after that, The Triple Threat Revue played there. It was from stuffing quarters into Stubb's jukebox on the Saturday afternoon of that first gig that Stevie picked up the correct lyrics to Tin Pan Alley, which would later appear on his first album. And it was that same afternoon that Stevie plugged in and played an instrumental version of Little Wing, with an audience of only four people - two patrons, the cook, and a friend of the owner.
One thing not mentioned was that John Hammond's going for Double Trouble was to fix a mistake. He had seen the Triple Threat Revue in New York and grabbed singer Louann Barton, effectively ending the band. After Barton's album missed expectations Hammond realized that the real treasure was Stevie.
Producer Kirby Warnock holds a BA in history, so he approached the film as an "oral history" instead of an elongated music video. He wanted to get Eric Clapton and Jimmie Vaughan describing the last concert with Stevie at Alpine Valley, and the stories from the Vaughan Brothers early days.