'I am well aware of the distinction between eceilidh and "social dance"'
(Whoever you are) but clearly some people here weren't...

'outside of the historic dance repertoire, there are very few dances that require a set tune even if some have one commonly associated with them.'
I did notice during some of our Chippenham dances that the "set tune" for a dance was, for example, a fairly generic 32 bar jig, and wondered if it would really matter if we played a different tune, or how many people would have noticed.