In an electronic musical instrument that can output stored lyrics of a song in accordance with keyboard operations by a user, a processor determines whether a melody should be advanced or not while multiple keys of a keyboard are pressed by the user using prescribed criteria, if the processor determines that the melody should be advanced, the processor advances the lyric in response to the user's multiple key operation and if the processor determines that the melody should not be advanced, the processor does not advance the lyric in response to the user's multiple key operation.