"Folk" is a folksy sort of word for people. At our club, every member of the audience is a potential floor singer. If you want to sing (play, recite, juggle, do tricks with string,...) you get a floor spot if there's time. The residents will give up their spot to make room. (FHB = Family Hold Back)

No auditions, you just have to want to do it. As far as I am concerned, that is what folk music means.