Hope it's useful :)
Specific types of Dancing, and Singing, and their are usually specific instruments depending on what type of spiritual dancing you are talking about
it didnt just every race has its only style of dance like nigger people is break dancing
I don`t think there is any real explanation for it. But i think it has been influenced by people.You think about it, it only takes one person to create and different dance move, and that can lead on...
Tango
Your backbone "bends" as you bend over.