I taught them "Graduation" by Vitamin C, but only the chorus. They enjoyed it, even though usually they are pretty bad. I was gonna try the one by Cliff Richards, but frankly, I think my class would have fallen asleep from it. They don't get into singing much, especially any song that seems "older".
http://www.youtube.com/watch?v=0UjsXo9l6I8Jay-Z - Empire State of Mind is a great video to show. I showed it at the end of my 1st lesson 7 months ago and my students still request it. It highlights New York City and almost every Korean students knows New York. I did a travel pole and 3/5 wanted to go to New York, if they could go to USA. I asked my students what the capital of USA was and a good deal said New York. The video has lots of good pictures of New York and there is no swearing in the song. Almost every student asked what the song's name was after/during the song. They also wanted to know who Alicia Keys was. Tell them Jay-Z married Beyonce and all the girls will go insane, because Beyonce is one of the most popular female stars in Korea. The song it very catchy too.http://www.youtube.com/watch?v=VuNIsY6JdUwI wish Lady Gaga had some clean videos, because the students love her. My students REALLY love Taylor Swift. They didn't even know her. I played the video and they loved it. They loved the song and the video. The video is a classic American fairytale. It has a lot of American culture in it too. The classic "girl next door," American fashion, slang, high school activities, and is very catchy. My low-level students can even sing the song. Not to mention, the girl students go crazy for the boy. There is only the mild kiss in the middle of the song and the big one at the end. Test it out with your Co-Teacher first, because not every school is fine with that being seen. I personally don't like Taylor Swift, but it is a good break from hearing JUSTIN BIEBER every 10 seconds.