"Nobody" by the Wondergirls is the ultimate secret teaching weapon. If you promise your students that you will play this or any other K-Pop song at the end of a class they will generally behave and hold you in the upmost respect.
Here are the kindergarteners aka. mini Wondergirls and boys.
I'll try and get a video of my kids singing "Sunset Glow" by Big Bang! this week. It won't be hard. AH! AH! Ahah! AH! AH! AH!