You can use this worksheet to improve listening and vocabulary. It's a fill in the gap excercise where the missing words are adjectives. For the first or second listening just show the video, then let the students watch the original version of the song with lyrics so that even slow students can fulfil the task. The next step could be to divide the class in small groups and ask them to change, for example, the first part and the chorus of the song using adjectives that describe their personality, in this way they'll invent a new version of the song.