The Charge fanfare dates to the 1940s, when Tommy Walker wrote the six-note call for University of Southern California football games. Ballpark organists adopted it in the 1950s, most famously at Los Angeles Dodgers games, and crowds learned to shout Charge at the end. It spread from baseball to football, basketball and hockey, becoming a universal cue for a rally. Online it is paired with crowd cheering and used like a short victory fanfare for home runs, comebacks and mock heroic moments in edits and memes.