It makes a difference whether you are doing background, where nobody is focussing on you, or whether you are doing a concert-type thing, where people pay attention.

When doing background, we go through our book, first playing all the songs in C/Am, then start over doing what's in G/Em, then what's in D/Bm. This is for the harps, so they don't have to keep moving levers. As we do this, we alternate between major and minor tonality, between fast and slow.

If people are listening, we try to add songs they can join in on, or juxtapose related pieces. For example, we could do the Irish song about Stewball followed by the American one.