They are a nostalgic item for those who grew up in the 70's and 80's.
Users of cassette players will be reminded of boring songs on graphical radio shows, desperately trying to hit the pause button before the DJ skips music.
If you did not succeed, you could always rewind with a pencil stuck in a roll-hole, attach the offending segment, and then do well with a sticky tape.
But the cartridges were unreliable – they often got stuck and ejected shiny brown strips – and it took forever to find your favorite track.
So when the CD took over in the early nineties, few music lovers missed it.
But now the clinical music player is ready to revive thanks to the hit movie Guardians Of The Galaxy, featuring Chris Pratt as he listens to his favorite tracks on Sony Walkman.
Blockbuster marketers released a movie soundtrack on a tape that looked like the one in the movie. And now, several high profile artists, including Robbie Williams, Coldplay, and Liam Payne, are releasing album covers.
The label records association, BPI predicts that fans will buy 100,000 cartridges in 2019 – more than double the 2018 figures. And, it's not just nostalgia for driving sales. Many clients will be under 25 years of age.
Retailers, including Argos, Tesco and Urban Outfitters, are selling budget boom boxes starting at £ 15.
Tony Butrode, a rare Vinyl Tap store manager, says there is "definitely more interest" in buying cartridges, with artists such as Kylie Minogue selling particularly well.
He said: "They are cheaper than buying CDs. While some see it as nostalgia, you also get a lot of younger kids to buy that weren't around when the bars were big.
"I think there's a little bit of a hip about that."
About 36,000 tapes were sold in the UK by June this year, according to the BPI and the official Tables company. Karen Emanuel, chief executive of music firm Kick Productions Group, said UK-based companies "struggled" to find tape supplies to meet the number of orders.
But this boom in sales remains relatively muted compared to the glorious days of the cassette player. In 1989, 83 million albums were sold as a tape in the UK.
Sun Sun columnist Tony Parsons, who worked as a music journalist for NME magazine, recounted his shock at the news.
He said: "I strongly doubt that nostalgia is for lost youth, rather than for old cartridges.
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"Cassettes were – and remain – the worst possible way for the world to experience music.
"It's true that scratched vinyl, bent CDs and streaming online take away the sound details.
"But nothing was as oil as the cartridges."