Singing is hard enough as it is. Singing while playing a musical tune with a cup is near-on impossible. And getting 1,500 people, including a load of kids, to do it at the same time.. well, it's never been done before.
Over in Drummondville, Quebec, students from kindergarten to high school, and all the school's staff, got together and broke the world record for most people performing Anna Kendrick’s ‘Cups’ song - as made famous by the film Pitch Perfect.
Saint-Bernard school, we salute you.
And here's Anna Kendrick herself performing it live: