Now here's a thought, in part rooted in personal experience --

Is there a causal relationship between the drier American scene and the shortage of unaccompanied singing? It takes a lot of courage to sing without even an instrument between you and the audience, and maybe the availability of "Dutch courage" makes it easier in the UK.

I used to want to have the guitar to clutch even if I wasn't using it... fortunately, I've gotten beyond that. Maybe it's because of the occasional practice opportunity singing out at the local Irish sessions which take place in wet venues...

;-)

~ Becky in Tucson