An electronic musical instrument displays a musical score including lyric character strings on a displayer 21, using music data stored in a storage device 43, by program-processing by a computer main unit 42. The music data includes a series of data representative of a lyric character string separated by break of lyrics, word, or segment of a sentence, the series of data stored in associated relation with data representative of a timing indicative of progression of a musical piece. The computer main unit 42 displays, on the displayer 21, a lyric character string which is not provided with enough display space in a display style different from a display style used for a lyric character string provided with enough display space. For example, part or the whole of characters of either of adjacent overlapping character strings is omitted, with a mark representative of being omitted attached. Alternatively, part or the whole of a preceding character string is displayed in a reduced size or in rows. As a result, on displaying character strings for a musical piece in associated relation with a musical score, even in cases where there is not enough space to display the character strings, the character strings can be displayed appropriately.