Brick Of Sound 4 (Paperback) (ISBN-13: 9798218383664)

In this round of action-packed adventure with Madison and her crew, everyone begins to get acquainted with new worlds and new friends (and enemies). During this time, Madison begins to notice her powers are evolving. As she navigates the change, she and her friends face challenges that test their powers as well as the knowledge they always had. Once the battles begin and troubles arise, there's no turning back.