They are at a school and the audience is a group of high school kids. They are all women and they could be the Rockettes. They are all ladies and they may not be professionals because their shoes don’t match. The shoes look like they belong to older people. In fact the legs don't match. The other legs are behind the curtain or maybe they are ready to come down.
When the curtain goes up we will see middle-aged women possibly wearing costumes. They are a dancing class. The curtain is going up and the kids are in the audience. There is music, see there is an orchestra pit. There is clapping and whistling. They are the “Tappers.”