Tradition holds that everybody must eat until they are absolutely stuffed. The song leader might accuse the preacher of breaking in line to get more food. When everyone's plate is full, the singing will begin. Duos, trios, quartets and quintets are often organized from the church choir. Some churches set up a place for the singers outside.
Most churches let the singers stay inside, near the piano and organ.
As they finish eating, people go inside the church to hear the singing. They go back out for seconds, thirds, and fourths. Many of the modern fellowships halls have a piano and a stage or an area for the singers. Many of the singers will have prepared and practiced. Sometimes the audience will call out requests to the pianist and singers.