I basically play a progression of chords, part of a song, or a modified version of a song. It's o.k. to use a song or hymn as talk music, just don't make it noticeable. Talk music should be just that, music that helps enhance the TALKING that's going on, lol. If you start playing a noticeable song, people gonna sing and forget all about what's being said. There really shouldn't be a beat/pulse at all, it should be very free flowing.