The sweetest music in sport doesn't arrive from stringed instruments or the percussion of baseball hitting wood. It's you yelling. It's your sister on her noisy feet. It's your dad going mental. It's what Vin Scully, the American sportscaster, called "the roar of the crowd". It shakes stadiums and unites strangers into a high-decibel horde.
This roar has magical properties. It gives life to stone arenas and resuscitates the dying team. It wards off exhaustion and has the rough edge of intimidation. It's the background music of conquest and it is unstoppable. As swimmer Penny Oleksiak once noted: "Even when I was in the water I could hear the crowd."