I used this song to encourage listening and to review the use of the "future simple" tense, as well as introducing new theater-oriented vocabulary.
1. Play the song (available on youtube or Spotify) once, asking students to jot down any French words they recognise, as they listen.
2. Based on what they heard, ask what they think the song is about. Can also ask what is the overall feeling of the song, and whether they hear particular instruments, etc.
3. Pass out sheet, which has all "future simple" words blanked out. They are listed in a box on the same page, so they can try to fill in the blanks during the second listening.
4. In groups they can look up vocabulary words they don't understand, and either translate the entire song, or simply discuss the meaning as a group.
My French 3 class enjoyed it!