Denkishiki Karen Ongaku Shuudan (?????????, "Electronic-Style Karen Music Group") or Denkare is a band created on the year 2001, which is formed by members: - Denki (Lyricist, Composer) - Karen (Vocalist, Lyricist) - Shiki (Guitar) - Dang (Chorus) They produce music for the visual novels of Black CYC. Their music varies but includes neoclassical / gothic metal. Karen has been speculated to be ????'s vocalist, Fairy YUI, due to similarities in range and sound, as well as sharing the same birthday.