The notes on "In Search of..." and "Unearthed" are woefully unhelpful in finding the source of their tracks. They contain performances of "Seven Yellow Gypsies", "Hardiman the Fiddler", "Fare The Well My Dearest Dear", and "Icarus" but it is not clear if these are the performances that Tony mentioned.

And Tony, I have only Nic's LPs and CDs, no other radio sessions, so I can't help you here. Sorry.