It is highly likely that a great number of songs and ballads that were originally Minyo (a traditional folk song) or zokuyo (popular song, ballad, folk song, ditty) are appropriately contained in "Kojiki" in accordance with the tales.
これらの歌謡のなかには、もと民謡や俗謡であったものが、物語に合わせる形で適宜はめこまれたというものが相当数含まれている可能性が高い。