I don't know how it is for other schools, but for my school we were told not to post our show (people do anyway) because of copyright laws. I know I asked my band director about how cool it would be to have a phantom of the opera show, and she said we couldn't because of some copyright things. So mu assumption is that bands have the permission to use it in their shiw but not anything else, including social media. Of course that's still a guess.🤷🏻♀️