About the Song
Untitled Song (なまえのないうた, Namae no nai Uta, Nameless Song) is a song composed by DATEKEN and sung by Len Kagamine. It tells how Len was in a room alone, and he felt somewhat lonely in that room. He started to hum a melody, a melody of his own, and it turned into "the" song. The version used in Taikojiro is Luka Megurine and GUMI Megpoid version of the song.