"Dancer in the Dark" is a song by FatmanP featuring Megurine Luka. It is in a minor key and heavily utilizes synthesizers, although at the quieter parts a piano and strings take the center stage. The song begins with the refrain, followed by a verse, the refrain again, a second verse, and a final refrain. The PV depicts Luka in a city at night, holding a gun. Her left arm appears to be present, but is entirely black, unlike her other arm, which is bare. In one scene, a butterfly is shown falling away from its left wing.