Wednesday (Oct. 21) is not only the actual day that 'Back to the Future's Doc Brown and Marty McFly traveled forward in time to in the film series' second film, but also a day to celebrate the trilogy's legacy outright.
Did Michael Fox actually play electric guitar and sing “Johnny B. Goode” in the Back to the Future movie? - Quora
Marty McFly SLAYS Johnny B. Goode, Back To The Future (1985)
Marty McFly Performs Johnny B. Goode (Michael J. Fox), Back to the Future
Back to the Future (1985) - Johnny B. Goode Scene
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Johnny B. Goode - From Back To The Future Soundtrack - song and lyrics by Marty McFly, Starlighters
Johnny B. Goode (From Back to the Future) - song and lyrics by Movie Soundtrack All Stars
Back to the Future: The Musical”: 1985 never looked so good – Q30 Television
Johnny B. Goode, Futurepedia
Back to the Future: Music from the Motion Picture Soundtrack Marks Historic Film's 30th Anniversary with Two-Sided Vinyl Picture Disc on October 21
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Music of the Back to the Future series - Wikipedia