Whilst googling cassingle I found the wiki page:
http://en.wikipedia.org/wiki/Cassingle

At the bottom is a list of analog recording formats.

Lol, I like this one.

All of our petty hopes could be fulfilled…..

I had a cassingle of Iggy Pop’s song, “Candy”. The B-Side was “Neon Forest”. I got it for a dollar I think. It was in the 90’s.