BIASING A MUSICAL PERFORMANCE INPUT TO A PART

Described are methods, systems, and apparatuses, including computer program products, for biasing a musical performance input of a player of a rhythm-action game to a part in the game. In one aspect this is accomplished by providing, by a game platform, a history of a degree of matching between a prior music performance input data and a prior music data associated with a first part in a musical composition. Then, on a display, a plurality of target music data, each associated with a respective part in the musical composition, is displayed, with one of the plurality being associated with the first part. Music performance input data is received by the game platform via an input device, such as a microphone, and, based on the history, the received music performance input is assigned to the target music data of the plurality that is associated with the first part.