All the dances you will see, even the ones that come from villages, have been choreographed for the stage. They are theatricalized dances. He or she makes decisions about how people will move on stage, when they enter and leave and how many will dance at a particular moment.
Some choreographers start with a piece of music and set the dance patterns to it.
Others start with images and dance patterns, then fit music to that. Dances are created in many ways and for many reasons. They often help people feel more connected together. Some dances are just for soloists to dance themselves as an act of meditation. By reading about each of the dances in the show, you can learn some of the meanings before you watch.