Electronic musical instrument, electronic musical instrument control method, and storage medium

A method performed by at least one processor in an electronic musical instrument that includes, in addition to the at least one processor:

• a performance receiver having a plurality of operation elements to be performed by a user for respectively specifying different pitches of musical notes;
• and a memory that stores musical piece data that includes data of a vocal part, the vocal part including at least first and second notes and respectively associated first and second lyric parts that are to be successively played in the order of the first note and then the second note, wherein the first note has a first pitch and the second note has a second pitch, the method comprising, via the at least one processor:
• when the user specifies, via the performance receiver, the first pitch,
• digitally synthesizing a first singing voice that includes the first lyric part and that has the first pitch in accordance with data of the first note stored in the memory, and
• causing the digitally synthesized first singing voice to be audibly output;
• and
• if the user specifies, via the performance receiver, a third pitch that is different from the second pitch successively after specifying the first pitch, instead of the second pitch of the second note that should have been specified,
• synthesizing a modified first singing voice that has the third pitch in accordance with data of the first lyric part, and
• causing the digitally synthesized modified first singing voice to be audibly output without causing the second lyric part of the second note to be audibly output.

A non-transitory computer-readable storage medium having stored thereon a program executable by at least one processor in an electronic musical instrument that includes, in addition to the at least one processor:

• a performance receiver having a plurality of operation elements to be performed by a user for respectively specifying different pitches of musical notes;
• and a memory that stores musical piece data that includes data of a vocal part, the vocal part including at least first and second notes and respectively associated first and second lyric parts that are to be successively played in the order of the first note and then the second note, wherein the first note has a first pitch and the second note has a second pitch, the program causing the at least one processor to perform the following:
• when the user specifies, via the performance receiver, the first pitch,
• digitally synthesizing a first singing voice that includes the first lyric part and that has the first pitch in accordance with data of the first note stored in the memory, and
• causing the digitally synthesized first singing voice to be audibly output;
• and
• if the user specifies, via the performance receiver, a third pitch that is different from the second pitch successively after specifying the first pitch, instead of the second pitch of the second note that should have been specified,
• synthesizing a modified first singing voice that has the third pitch in accordance with data of the first lyric part, and
• causing the digitally synthesized modified first singing voice to be audibly output without causing the second lyric part of the second note to be audibly output.