Interesting that the dance hall at Cecil Sharp House was mentioned...

I can remember going to CSH for folk gigs in the seventies - from memory most were held in a small room next to the big one. This was the era when EFDSS was still the English Folk Dance and More Dance and even more Dance Society, and you could hardly hear anything for the great galumphing Playfords next door. Something to do with the floor of the dance hall I believe.