Broadway can sometimes be its own secluded island of culture, trivia, and inside jokes. But if anything ties our world to the mainland, it's Game of Thrones.

Just about the entire world celebrated the season 7 premiere last night, including the musicians of Broadway's The Great Comet. Take a look at their jam session to the Game of Thrones theme song, filmed right in the middle of their Russian supper club at the Imperial Theatre.