Singing can build students confidence by allowing them to enjoy a degree of fluency in English before they have achieved it in speaking. This is possibly the way that most teachers use songs. Choose a song that has some connection with the structure or part of speech that you are teaching. Delete a few words from the lyric and hand the incomplete lyric to the students.
Students listen and complete the missing words.
Give the students some time for correction and answer any vocabulary questions. As a follow-up, you can prepare a sheet pointing out a grammatical point that you might want the students to learn at that point, and have a structural or communicative activity after that. You can give the song in cloze form or simply the whole thing just for introduction. Singalong Videos Singalong videos are great because they have the lyrics on screen and students have fun watching the visuals while they sing. They are also easily available.