User blog:CranberryClockworker/Wiegenlied Obi

A few days ago, I recieved the copies of Closure of Yellow and Wiegenlied of Green in the post. For the Prefazio of Blue promotion, some copies of the other novels and worldguide come with a special band on them which Vocaloid wiki said meant you could get an exclusive CD with FOUR exclusive songs on it. My copy of Wiegenlied has said band, how do I claim for my CD?

I looked on PHP.co.jp, but I couldn't find anything about it

Does anyone know what I should do?