The evil Martians were killed by a song near the end of the
Mars Attack! movie. What is the title of the song? A youtube link will be helpful.
Richie discovers that the Martians' heads explode when they hear Slim Whitman's "Indian Love Call." He and Florence drive around town, using the song to kill Martians. The military thereafter broadcast the song around the globe, killing most of the Martians and their leader and causing the few remaining survivors to either flee from Earth or surrender.