Good background songs


 * https://soundcloud.com/weebclod/03-doll-house?in=weebclod/sets/black-butler-ost-2
 * https://soundcloud.com/anime-18/kuroshitsuji-ost-1-02-si-deus-me-relinquit
 * https://soundcloud.com/andrew-scott-73/bloody-vow-black-butler
 * https://soundcloud.com/user3721136/top-24-of-kuroshitsuji-ii