There may not be so much to play for the warm down of a dance class. If it is the first class working together with a teacher then  look for signs of how much or rather how little music there needs to be.  I would usually play this part of a class as calm as possible. It  depends upon how the class has gone and what mood  everyone is in ( as an accompanist, you need to have a sense of the general mood swings of your fellow protagonists). If the mood appears quite clinical with a simple stretching exercise, a straight forward calm piece of music will do fine. If  however, everyone in the class has just `given it their all` then it may be appropriate for the music to take a slightly emotive direction.

  Here are some instruments I use for accompanying a dance class.