Teaching children songs is always fun because they will clap hands, dance around and sing along. Very few young learners will not be willing to participate. As for adult students, they will enjoy anything that provides them with opportunities to learn. They want to know the meaning of every word and what grammar point is being presented. They don't care much for singing, so focusing on grammar and vocabulary usually does the trick. Another positive aspect about adults is that they don't care whether the song is new or old, but whether they can learn something from it. Having song activities for teens, on the other hand, is an entirely different thing. They don't care for learning, they just want to have some fun. They may also not respond well to old songs, so having a song list devised by them as a reference is advisable. They do respond well to challenging tasks or tasks that involve controversial issues, which will consequently lead to warm discussions.