That's the worst of it - it isn't original at all. It's just what was happening in the better establishments from about 1920 - 1980. If it's one the system can't stand it's being told that all its original ideas were complete b#llocks !
Edit: At least with music you have some understanding of pattern and symmetry. It's the PE teachers taking maths classes one worries about. I've never taught modern dance, though I have done Religious Education, girls' water polo, and Essay Writing (that one at an FE college). Oh, and How to Hotwire Vehicles.