28. The computer-readable recording medium storing a music score reading program according to claim 27 further comprising: matching judging function of judging whether matching between the separated label and the dictionary is successful; and label coupling function of, if the matching fails, causing said scanning function to continue scanning of the stem candidate and coupling a next detected head label and said separated label, wherein after the label coupling, said recognizing function matches a coupled label and the dictionary.
28. The computer-readable recording medium storing a music score reading program according to claim 27 further comprising: matching judging function of judging whether matching between the separated label and the dictionary is successful; and label coupling function of, if the matching fails, causing said scanning function to continue scanning of the stem candidate and coupling a next detected head label and said separated label, wherein after the label coupling, said recognizing function matches a coupled label and the dictionary. 30. The computer-readable recording medium storing a music score reading program according to claim 28 further comprising preference degree assigning function of assigning preference degrees to recognition results respectively recognized through matching during head recognition while the head recognition and the label coupling are repeatedly carried out, wherein said recognizing function arranges the recognition results in the order of higher preference degrees.