I can't recall ever going to a folk club and not hearing plenty of folk songs (both traditional and contemporary - the latter of which I mean from songwriters who work in the folk idiom eg Jez Lowe, Reg Meuross) including plenty of unaccompanied songs

Occasionally the guest booked does not perform folk material eg I went to see Christine Collister and Michael Fix who primarily performed pop / rock songs, but that is very rare and even in this case the floor singers sang folk songs