I understand the frustration.
My preference is for music that was released between February and October 1965, on labels that contain two vowels or less, eg Sugar Pie Desanto - 'Here you come running' on Checker, whereas Dontells - 'In your Heart' would have to be excluded because even though the date is correct, there are three vowels in Vee Jay. On the plus side Motown has two vowels with plenty of releases in the time period, but I'm not a great fan of Motown and couldn't listen to a whole night of it. Sometimes I'm lucky and as many as six records that suit my criteria have been played in a single night. Across the board venues usually do the business more than others.