Cassette album sales in the United States rose by 35% last year, according to Nielsen Music (via the Hollywood Reporter). Total sales numbered 174,000 copies in 2017, as compared to 129,000 in 2016. The top three best-selling cassette tape albums in the U.S. were different soundtracks for the Guardians of the Galaxy series of movies. According to THR, the Guardians of the Galaxy soundtracks made up 22% of all cassette album sales last year. Other top-selling cassettes included the Stranger Things OST, Vol. One (released in the summer), Eminem’s The Eminem Show (reissued on cassette to celebrate its anniversary), Kanye’s Yeezus, Nirvana’s Nevermind, and more.

Guardians of the Galaxy soundtracks also dominated vinyl sales, with 2014’s Guardians of the Galaxy: Awesome Mix Vol. 1 being listed as one of the top-sellers of 2017. Vinyl sales grew last year as well, rising by 20%.