Sound Track from Film "Mabuta no Ura" is the ninth studio album by Japanese experimental band Boris. Though the title describes the album as a soundtrack for the film Mabuta no Ura (lit. "Under the Eyelids"), no such film exists. The album is rather the result of the band imagining a film in their heads and writing a soundtrack for it. Because of this, the band has classified this as a concept album. The album's concept is also driven by photography and art-styling which is included on a version of the album.