Patent ID: 7703014

Claim:
An apparatus for arranging music score displaying data for displaying a music score having measures of music progression on a given music score display area of a display device across a plurality of staff tiers, each tier containing one or more measures of variable lengths as justified for the display area, said apparatus comprising: an input device which inputs data representing a music performance in a plurality of measures of music progression; and a controller comprising: a music score notational element determining device which determines music score notational elements necessary for displaying on said display area a music score for each of said measures based on the input music performance representing data; a display size setting device which sets, according to input by a user, individual display sizes of said music score notational elements to be displayed on said display area; a horizontal length determining device which determines a horizontal length of the music score to be displayed on said display area; a measure apportioning device which calculates, based on the set display sizes, a minimum horizontal length of each of the measures necessary for placing in each of the measures at least one kind of said music score notational elements, which are determined by the music score notational element determining device, without an overlap in a horizontal, and apportions said measures for each of said staff tiers based on said calculated minimum horizontal length of each of said measures and said determined horizontal length of the music score to be displayed on said display area such that the music score notational elements of each of said measures are placed on the apportioned staff tier in a length of at least said minimum horizontal length, while each of said measures is positioned only on a single staff tier and not spanning across multiple staff tiers; and a music score display data output device which outputs music score display data for displaying on said display area said music score notational elements on said staff tiers according to the apportionment of the measures by said measure apportioning device, wherein a number of measures displayed on each display area page of the display device is determined based on the set individual display sizes.