Problem: Background: Chapter 27 is a 2007 biographical drama film depicting the murder of John Lennon by Mark David Chapman. It was written and directed by Jarrett Schaefer, based on the book Let Me Take You Down by Jack Jones, produced by Robert Salerno, and stars Jared Leto as Chapman. The film takes place in December 1980, and is intended to be an exploration of Chapman's psyche. Its title is a reference to J. D. Salinger's novel The Catcher in the Rye, which has twenty-six chapters, and suggests a continuation of the book.
Context: The script took Schaefer four years to write, but when it was finished, the film came together quickly. With the help of producers Alexandra Milchan and Robert Salerno, Schaefer cast Jared Leto as Mark David Chapman. For his role, Leto gained 67 pounds (30 kg) by drinking microwaved pints of ice cream mixed with soy sauce and olive oil every night. Gaining the weight, he said, was tougher than dieting himself into skeletal shape for his role as drug addict Harry Goldfarb in Requiem for a Dream (2000). The abruptness of Leto's weight gain gave him gout. He had to use a wheelchair due to the stress of the sudden increase in weight put on his body.  After the shooting of the film, Leto quickly went on a liquid diet. He explained, "I've been fasting ever since. I've been doing this very strange, like, lemon and cayenne pepper and water fast. I didn't eat any food for 10 days straight; I think I lost 20 pounds that first 10 days." Losing the excess weight after Chapter 27 proved a challenge. "It took about a year to get back to a place that felt semi-normal," he said; "I don't know if I'll ever be back to the place I was physically. I'd never do it again; it definitely gave me some problems."  Twenty-two years prior to this film's production, actor Mark Lindsay Chapman, while professionally using the name Mark Lindsay, had been almost cast as John Lennon in the biopic John and Yoko: A Love Story (1985). Yoko Ono had been deeply involved in the production and had herself been initially impressed with his audition and approved his casting prior to discovering his full name was Mark Lindsay Chapman. She then nixed his casting on the grounds it was "bad karma", and a great deal of press attention was given to his having almost gotten the role. The director of Chapter 27, Jarrett Schaefer, auditioned many Lennon impersonators, but was especially impressed with Mark Lindsay Chapman's tape because he conveyed the "tough town" street-smart quality of Lennon that the impersonators failed to convey, as they always played Lennon as larger-than-life. Schaefer described Lennon as having a "chip on his shoulder and always cracking these cynical one-liners", and felt that actor Chapman was best at conveying this quality. Schaefer had some difficulty negotiating the casting with the film's producers because of Chapman's name. After Chapman was cast, he asked Chapman how he should be billed to which Chapman replied "Mark fucking Lindsay Chapman. That's my fucking name." Schaefer remarks that this was so reflective of how Lennon talked, it just reinforced his sense that Chapman was right for the part.
Question: Is there anything else interesting you could tell me about the cast?
Answer: The director of Chapter 27, Jarrett Schaefer, auditioned many Lennon impersonators, but was especially impressed with Mark Lindsay Chapman's tape

Problem: Background: Double Trouble is an American blues rock band from Austin, Texas, formed by guitarist/singer Stevie Ray Vaughan in 1978. The group was active throughout the 1980s and responsible for reviving the blues, inspiring many later blues and rock musicians. Formed in Austin, Texas, by 1985 the group consisted of Vaughan, Chris Layton (drums), Tommy Shannon (bass), and eventually Reese Wynans (keyboards). While with Vaughan the band was billed Stevie Ray Vaughan and Double Trouble.
Context: In September 1977, Stevie Ray Vaughan formed a revue-style group with several musicians from the Austin live music scene, including singer Lou Ann Barton, bassist W. C. Clark, keyboardist Mike Kindred, drummer Fredde Walden, and sax player Johnny Reno. They called themselves Triple Threat Revue, which was a nickname for Vaughan in reference to his multi-instrumental talent. By May 1978, Clark and Kindred had left the group; Vaughan changed the name to "Double Trouble", after an Otis Rush song of the same name, and a reference to both Vaughan and Barton. After Clark left to form his own band, Barton auditioned and hired Jackie Newhouse, who first met Barton in Fort Worth. In July, Walden was replaced by Jack Moore, a native of Providence, Rhode Island who moved to Austin and pursue drumming. After three months, Moore moved back to Providence to finish college, and was replaced by Chris Layton in September.  When Barton and Reno decided to leave the band in 1979, the group morphed into a power trio and Vaughan became the lead vocalist, and their name was changed to "Stevie Ray Vaughan and Double Trouble". In October 1980, during one of the band's frequent appearances at Rockefeller's in Houston, Vaughan jammed with Tommy Shannon, a former bassist for Johnny Winter, and was hired in January 1981. During the next year-and-a-half, the group gained popularity by performing in Texas clubs such as Fitzgerald's and Club Foot. They hired Chesley Millikin as their manager, who had been Epic Records' general manager in Europe, and ran Manor Downs, a horse racing track near Manor, Texas. The band performed at the racetrack the following year, which was filmed for a proposed television series, though it was not picked up by any major network.  In March 1982, producer Jerry Wexler recommended Vaughan and Double Trouble to perform at the Montreux Jazz Festival in Switzerland, after attending a performance in Austin. In July 1982, the band performed at the festival and were the first unsigned act to perform at the event. Despite boos from the audience, their performance caught the attention of David Bowie and Jackson Browne, the latter who offered the group free use of his recording studio in Los Angeles. Layton recalls: "He goes, 'I have a studio in Los Angeles. I keep it for my pre-production work and have loaned it out to a number of people for special projects. If you guys are ever in Los Angeles and you want to use it, just let me know in advance and it's yours.'"
Question: What type of music did Double Trouble play?
Answer:
Jazz