All the performers perform amongst hetero people in the normal way of things, as you would hope and expect, so it wouldn't achieve much to have just another of those gigs. I wasn't able to get to the concert myself but think it was a great idea to highlight an aspect of folk that isn't always obvious (as someone said above, as trad folk and nearly all love songs within any folk event I've attended emphasise heterosexual relationships). Well done to the organisers, and to whoever designed the wonderful poster.