In the U.K., cassette sales were up 112 percent year on year in the first half of 2019, even if that means only 36,000 cassettes were sold. Sales in the U.S. are growing, too. In part, the cassette phenomenon is driven by the various mixtapes related to the Guardians of the Galaxy movie, in which a cassette tape plays an important, emotional part in the plot. In a similar way, the movie Baby Driver, in which the protagonist listens to music on iPods, drove up the sales of the retro devices in 2017.
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