"Co Gal" (Japanese: 子　ギャル, Hepburn: Ko Gyaru) is a song by Japanese musician hide, released sixteen years after his death. Originally demoed in 1998, the track was finished utilizing Vocaloid technology to mimic the artist's voice. It was included on a compilation album of the same name that was released on December 10, 2014 by Universal Music. It reached number 2 on the weekly Oricon chart and was the 81st best-selling album for the year 2015.