In 2013 Edge Entertainment ran a Christmas competition for fans of Zombicide to create their own missions. They were published in French on the Edge Entertainment website, but never made it to the official Zombicide website.
This is an unofficial English translation of the second of four winning missions, originally called "Massacre en Chanson". The mission was designed by Charlène Daubelcour. It requires Zombicide Season 1 and Toxic City Mall to play.