"Fight On" is the official fight song of the University of Southern California (USC), composed in 1922 by Milton J. Roth and Sammy Cahn. It is played at various athletic events, particularly during football games, to rally support for the USC Trojans. The song emphasizes themes of perseverance and school spirit. The phrase "Fight On" has become a rallying cry for USC students and alumni, symbolizing their determination and pride. It is often used in conjunction with the university's mascot, Traveler, a horse that represents the Trojan spirit during sporting events.