Carey Mulligan has an unexpected rule that keeps music out of her home with Marcus Mumford. Marcus Mumford says he stops talking whenever music starts playingMarcus Mumford, 39, appeared on the SmartLess podcast on July 27. The Mumford & Sons frontman said he can’t play music in his home because of a rule set by his wife Carey Mulligan. Mumford shared that he can’t let music play in the background; he ends up stopping everything to listen to the music. TELL US WHAT YOU THINK ABOUT CAREY MULLIGAN’S RULE FOR MARCUS MUMFORD IN THEIR HOME.