Although this was an imaginary club, there was in fact a real C# Cellar Folk club, which if memory serves was on a Saturday night. I used to go regularly when it was run by Jack & Margaret King. Late 60's I think. Saw many good singers there, and made my first disastrous attempt at floor singing. Disastrous because I had been down to the pub in the interval, and had consumed a few too many beers there.