The BGM composer of this series (Iwasaki Taku) was still mixing tunes for use in this show on the 5th of April (last week). He blogged about composing the music without any reference material beyond the scripts of the first three episodes. Furthermore he also had no source material the anime was an adaptation of and hence finds it difficult.
That doesn't sound very good to me. Also why the hell is he still mixing BGM for the first 3 episode 2 weeks before the show's airing?!
http://ameblo.jp/soundtrack-maker/en...852734223.html <- blog link in question
As a consolation, he speaks highly of the the person in charge of the music placement Nagasaki Yukio, I don't know how reassuring that is to me, since they see each other on twitter...