I think we can all agree that the average 'ideal' bar band set list for the people here (and musicians in general) is far from the ideal set list for the average bar goer. And also we should all know by now that it would take us years to come to a consensus on a Top 20 bar band set list because if we all made our lists there's a very high chance that most people would only have 2-3 songs that are found on anybody else's list.
I think Mark should stick to the shitty songs.
I don't know how big the classes are, but maybe add the option of 1 song of your choice agreed upon by the class. If it's small enough that could work.