Mrs Duck, BS is generally taken to stand for Bull Shit although there are other interpretations. As for saying sorry, there is no need to. I was only asking a question as I believe that tradition in general and folk music are very closely linked and having brought music into the discussion it definately classed as a musical topic. Just my opinion and there are no hard and fast rules.

Rather than ponder on the use of prefixes, I will say thank you for starting an interesting thread.

Jon