Choose a catchy song that you enjoy and rewrite the lyrics, but stick to the rhythm and meter. Try to go way off topic from what the original lyrics were about. You can play the song while you work the exercise or search for the lyrics online and use those as your baseline. The idea is to get your mind on the musicality in your writing.
These poetry writing exercises are meant to be helpful and fun. If you used any of these exercises, feel free to share your experiences in the comments. And keep on writing!