Used to borrow CDs from the library and copy on to tape- Shine compilations etc.
Also used to tape loads of live concerts off the radio. Radio 1 used to do this on a Sunday night. Was a great way to hear a bands back catalogue when CDs were so expensive. There was a Suede one I absolutely rinsed and for years after I was mentally adding Brett’s onstage chat to the songs when I bought the albums.
So my tapes were mostly various cheesy britpop albums on one side and odds and sods from the above to fill the space.