No, it was some music that was actually original Irish or Scottish, IIRC, which is what blew me so away. They played a minor-key air which started slow, and later went upbeat and morphed into something else, perhaps in a major key - I'm not now sure. You can recognise a standard blues format, and this wasn't one! I also don't think it was symmetrical enough to be a song of the type that SJI is (which I would have known anyway).

This was before 1987 (I remember where I was living) so time has done its usual trick of erasing while you're not looking. Wish I could be more use -