1. A computer-implemented method for analyzing a musical score based on musical score image data representing an image of a musical score of a given music piece and logical musical score data logically representing the musical score of the given music piece, the method comprising: analyzing, based on the musical score image data, an image note sequence that is a time series of a plurality of notes included in the image of the musical score of the given music piece; acquiring, based on the logical musical score data, a logical note sequence that is a time series of a plurality of notes included in the musical score of the given music piece; and identifying correspondence relationship between individual ones of the notes in the image note sequence and individual ones of the notes in the logical note sequence by comparing the image note sequence and the logical note sequence.