This book, "A Little Wanting Song" by Cath Crowlery, is about two girls, one named Charlie and the other Rose. They are on opposite ends of the spectrum. Charlie is a shy and easily intimidated girl who lives and breathes music, but she doesn't let anyone hear her play. Rose, however, is outgoing, always with her two guy best friends, and has a plan to move to the city to get out of small town life.
