I see two interesting things in the above posts.

1 Many posters are complaining that performers are singing the same old tired songs over and over.

2 Posters who are performers are complaining that audiences are constantly asking for the same old tired songs over and over.

Hmm . . .

What I see is that a lot of the general audience members only occasionally attend live performances of folk musicians and they are looking forward to the songs they know to be mixed in with ones they have never heard before. Plus, it's common knowledge that most musicians take requests, and some people almost feel duty bound to put in a request along with a few bucks to thank the performer.