I'm thinking that UK club singing would be a different experience (different, not less than) because I would think that at club sings, the people present probably are taking turns leading a song, and all share an understanding of how it will go. Singalongs are becoming so rare in US culture that the "audience" doesn't have much experience with what will occur, and as individuals most would NEVER think of leading a song, themselves.... which would make for a very different community experience.

It would be community-building, perhaps, more than community-reflective. "We're all going to go sing tonight" is a different anticipation from "They are going to lead us to sing tonight."

~Susan