If you spend any time at all with social media, you may have encountered this already: a video of the Calgary Philharmonic Chorus singing crowd-sourced tips on how to stay warm during a Calgary winter, set to the “O Fortuna” movement of Carl Orff’s Carmina Burana, and recorded in the acoustically and visually sumptuous Jack Singer Concert Hall. The video is a partnership between the CPO and Tourism Calgary, and was released on December 1. Since then, it’s amassed more than 20,000 YouTube views, a profile on CNN, and has been posted on more than 60 blogs from around the world.

Between November 21 and November 24, 2011 Tourism Calgary reached out to twitter users asking “How do you stay warm in #YYC?” The submitted tweets that used the hashtag #cpowarmup or replied to the @Calgary Twitter handle were compiled and turned into a twitter first (based on internet and social media searches) – a tweet compilation sung by a philharmonic chorus.

Talking about the phenomenon, Timothy Shantz, Chorus Master of the Calgary Philharmonic Chorus said, “We know that our music making has an impact. We see that regularly in the concert hall and in the community, and it’s exciting to take it outside of the box once in a while.”

If you’ve somehow missed the video, you can find it here.