leading the dance

I was near the front at a sort of concert and leading the dance. But the dancing was more like band marching. Lot of marching on the spot and raising stiff arms. I was dancing and Tammy from BMH work was across the stage as my partner. But we got to a part that I didn't know well and so she needed to lead. She could sing with it as well, even though there didn't seem to be words.