A good rule of thumb for teaching English lessons with songs: don't choose something with vaguely creepy lyrics. You will have to sing it a lot, and every time you do, the lyrics will get creepier. Especially if you have designed actions to go with the song.
I taught at the kindergarten yesterday. We played "Pass the Present". For those of you not familiar with this game, you wrap a box of treats in multiple layers of paper, and pass it around the room and everyone gets a chance to take off a layer. And for added English learning fun, we counted in English to decide who would get to unwrap the present. And as always, teaching at the kindergarten is a blast. What kid doesn't like opening presents?
After opening presents, we sang "Santa Claus is coming to town". Complete with actions. These kids are too little to learn a lengthy song in another language in under 10 minutes, so I made up actions to go with it. Have you ever realized how creepy that song is? Especially the "Big Brother is watching" aspect. The teacher at the kindergarten liked it because of it's "good message". Believe it or not, the lyrics sounds even scarier when translated into Japanese. But the kids had fun dancing and watching me make a fool of myself. And I always have fun making a fool of myself. But by the third class we did this lesson in, I was ready to never sing about Santa Claus knowing what you are doing at all times.