There's a difference between programming a special event, whether a cultural festival or wedding, and a club booking.

I think it's much more respectful to the performer's judgment, when booking for a club or pub evening, to suggest what type of material the booker WOULD like to hear. Telling them what NOT to play, based on arbitrary (and imprecise) criteria, is not a good start. A few hints about the audience--age range, perhaps even cultural/political tendencies if they are well-defined--are helpful and any seasoned performer will take these into account when planning a program.

W-O