Brief: 
Make 180 Amsterdam (a little more) famous by creating an easy-to-produce Christmas activation. 

Solution:
During the holiday season many people travel home to celebrate Christmas with their family. But sadly, some people are still working and sending work related e-mails. To inform its clients that the Christmas season has well and truly begun, 180 Amsterdam created the Christmas Autoreply Choir film, to deliver its out of office reply during the Christmas period.

Led by Kees Verhaar, the Dutch children's choir 'KinderKoor Prettig Weekend' adapted the traditional christmas hymn 'O Come All Ye Faithful' using the standard agency e-mail response - including the agency’s official disclaimer, to create a humorous film that's full of Christmas spirit.