Another thread like that:

https://news.ycombinator.com/item?id=1319995

Gah this can be so annoying. I've got one going for 56 years. A cassette tape that I had as a kid, all I remember is that it was orange and that it had the most amazing jazzy tracks on it (mostly instrumental). I've listened to every orange labelled tape on various tape archives and still haven't found it, the memory has faded far enough that I only occasionally remember snatches of it. But I'll keep looking.

Other ones: Tony Banks, Portrait of Jerry Jackson

https://www.youtube.com/watch?v=n_U0jhtzmzI

Cori Josias, Takin' it straight

https://www.youtube.com/watch?v=DPuCra-t_Bw

Maybe a K-Tel mixed track cassette like this one, which looks orange: https://www.discogs.com/release/5291004-Various-Instrumental...

The search is more fulfilling than the result in these cases, but still keep searching!