Old classic folk music. How are we supposed to say? You haven't said what KIND of a band. Could be gospel, metal, head banger, regular old time rock n roll. They wouldn't want to play some old music from a totally different genre.
Sure, Kris Kristofferson, Jim Croce, The Gershwins, John Lennon; and a few dozen others.
They should simply copy down the song lists from my old bar bands.
LOL No. Haven't played out since the mid 1980s.