There's something called the 20-year rule in fashion. It means that trends recycle themselves every two decades, which would explain a lot about why everyone's wearing scrunchies and bike shorts a la Princess Diana these days.

But the music industry has also gotten caught up in the nostalgia, with vinyl records on track to outsell CDs for the first time since the mid-1980s, according to Rolling Stone's interpretation of a midyear report from the Recording Industry Association of America. Nearly $224 million worth of vinyl records were purchased in the first half of 2019, a nearly 13 percent increase from the same time frame in 2018. People bought $247 million worth of CDs, which is still ahead of record sales but only a .8 percent increase from last year. The reason record sales might outpace CDs, however, is because of the growth in the second half of 2018 — Rolling Stone points out record sale revenue grew by nearly 13 percent in the second half of 2018, and CD sales experienced little to no growth.

However, according to the report, streaming services still make up the bulk of the music industry, with 80 percent of music industry revenues coming from streaming services, 9 percent from digital downloads and 9 percent from physical purchases like CDs or records.

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