I have been making jam this evening (blackcurrant, before you ask) and playing old cassettes. (The CD player is knackered).
I pulled out a 6 track cassette from 1981, made by Peter and Gavin Livingstone, called Quiddity. The final track is painful, but the other 5 are still very good listening. I bought the tape off them at the Argyll Folk Festival at Lochgilphead in '81, having seen them play. I have never heard of them since. Anyone out there know of them?