Melodies played by baseball fans in Japan to cheer on their team, usually when the team is on the offensive. Each team has its own set of melodies—for example, the Giants have "The Hit Parade" and "The Butterfly" (Smile.dk Dance Dance Revolution song) as two of their chance songs.

The exact origin of the practice is unknown, but as early as 1980 the Kintetsu Buffaloes cheering party played the Bold Shogun theme to cheer on their runners in the endgame.