Hi, I teach in College Saint Bernard. I can tell you the following infos: The students practiced for a whole month in their classrooms, from Kindergarden to Secondary 5. At the end of November, the students in charge of the project, went around the classrooms, the pool, the hockey program, theater program, cheerleeding....ect.. and took some footage to put in the video. Then in December, the whole school, students and staff, all 1500 of us, took place in the gymnasium to perform the cup song together, It took over an hour to get organized and film but yes, everybody did it at the same time. By the way, the song is not a soundtrack but really our students playing the music and sigining the song. Hope this clears up some confusion.