http://imageshack.us/photo/my-images/845/akaisorafimg600x4751327.jpg/
This is all i've got, it's the album (or rather single) of the full song. To my knowledge the title of the song is the same as the game, "Prismatic Princess ☆ Unison Stars"/プリズマティックプリンセス☆ユニゾンスターズ
I've been looking for this...