Chapter 2.

 I think that this chapter are talking not only lord of the dance but also the purpose of the dance. Most of the dances have the purpose for preying god.

 In my opinion, the dance has some form which is 'possession'. when we talk about the dance, we have to mention spiritual things. This is one of form of dance, of course, but it is really important aspect of ancient dance. they want to dance for being possessed the god. 

Other opinion is that they try to represent their the gods by the dance. So they believed that the gods will take care of them. Their believe can be presented by the dance. 

Finally, The dancers try to talk their history by the dance. They put the story into the dance, so audience would understand what they want to talk even they do not tell the story.