User blog comment:Rhiabloom12/Evils Kingdom Booklet/@comment-6966973-20130313070335/@comment-6986530-20130409104219

What about the box at the end of Recollective Music Box? That's also black, and it's supposed to make music according to Kirill. If that was what was put into the Clockworker's Doll, is that why she's able to sing? But it could be unrelated...