The Daily Swarm

“I bet you would be hard pressed to find a household in the U.S. that doesn’t have at least a couple cassette tapes hanging around,” said Shawn DuBravac, an economist with the Consumer Electronics Association. Even if publishers of music and audio books stopped using cassettes entirely, people would still shop for tape players because of “the huge libraries of legacy content consumers have kept,” he said.

As long as people keep mix tapes from a high-school sweetheart up in the attic, Mr. DuBravac said, there will still be the urge to hear them. “People have a tremendous amount of installed content and an innate curiosity when coming across a box of tapes to say, ‘Hey, what’s on these?’ ” he said.

The tapes started to really take off in 1979, the year that a radical new cassette player — the Sony Walkman — was introduced, enabling people to listen to Donna Summer and the Knack’s “My Sharona” while they were jogging (remember jogging?). The heft of the early Walkman — slightly smaller and lighter than a brick — is comical by today’s wispy iPod standards, but during the Carter administration it seemed sleek.

Nowadays, listening to music on cassettes is a dying pastime. None of Billboard’s Top 10 albums last week were issued on cassette, though half were released on vinyl, which has been resurging. Last year, only 400,000 music tapes were sold, representing one-tenth of 1 percent of all physical and digital music sales, according to the Recording Industry Association of America. In 1997, the figure was 173 million, and that was when cassettes were already getting a drubbing by CDs. (The iPod wasn’t introduced until 2001.)

“I would not expect to see a revival of cassettes like we’ve seen in the LP market,” Mr. DuBravac said. While vinyl records have always been prized artifacts for their devotees, the plastic cassette tape has little sex appeal.