The only cassette single I ever bought was by a French pop singer named Dorothée. I heard it while traveling in Paris and couldn't get it out of my head. Unfortunately, the song did not appear on any of her CDs (shopping at the Tower Records on the Champs-Élysées-- yeah it was that long ago). So I bought the cassette single. Still a good song...
I liked the shopping better one street over. I don't remember the name but I was able to buy cigars and there was an Armognac (sp?) tasting room, and it just seemed friendlier. Kind of like Sonoma vs. Napa in wine country out here.