what instruments does john williams use?
Trombone Piano trumpet clarinet
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 Williams previously worked with Homicide executive producer Barry Levinson on the films Good Morning , Vietnam ( 1987 ) and Toys ( 1992 ) . This led to speculation that Williams took the role on " Bop Gun " as a favor to Levinson , but the actor insisted it was out of admiration for the series itself . A young Jake Gyllenhaal , the son of the episode 's director , makes an appearance as Williams ' son . The episode was the first to feature Chris Tergesen as music coordinator , which resulted in the use of more songs than previous episodes , including " Killer " by Seal and " Feels Like Rain " by Buddy Guy . 

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 More recently , the Mellotron has been regularly used by Brian Jonestown Massacre 's Anton Newcombe , in recordings he produced with his band and also his solo project with Tess Parks . 

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 In 2002 Bayers formed a band , The Players , with fellow studio musicians Brent Mason , Paul Franklin , John Hobbs , Michael Rhodes . The group released a live DVD , Live in Nashville , featuring their own performances along with guest appearances by Peter Frampton , Shawn Colvin , Travis Tritt , Vince Gill , and Jim Horn . 

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 The earlier 1960s Mk II units were made for the home and the characteristics of the instrument attracted a number of celebrities . Among the early Mellotron owners were Princess Margaret , Peter Sellers , King Hussein of Jordan and Scientology founder L. Ron Hubbard ( whose Mellotron is now installed in the Church of Scientology 's head UK office at Saint Hill Manor ) . According to Robin Douglas @-@ Home , Princess Margaret " adored it ; he ( Lord Snowdon ) positively loathed it . " 

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 This song has been performed and recorded by many artists , including Judy Collins , Odetta , Melanie , and William Shatner . The song 's popularity led to Dylan recording it live many times , and it has been included in multiple Dylan and Byrds compilation albums . It has been translated into other languages , and has been used or referenced in television shows , films and books . 
