Music in the classroom: How to use music and songs in (English) language teaching?

Music in the classroom is a good way to teach, entertain and motivate our students. I also experienced it as a student of English in the secondary school and at the university. I can say that I learned a lot from my teachers from this point of view, as well. Starting from the warming up music to the songs which you can learn grammatical structures with. I hope you will also find good ideas in what I have written.