"Unknown Mother-Goose" is a song by wowaka featuring Hatsune Miku V4X. Made for the Hatsune Miku 10th Anniversary compilation album Re:Start, it is his newest work featuring VOCALOID since "Unhappy Refrain" (2011) and follows a six-year absence. It entered the Hall of Fame shortly after its upload, and about two months later, it entered the Hall of Legend. In April 2023, the song entered the Hall of Myths.
