Thirteen-year-old Nannerl Mozart is the great composer’s older sister. The two siblings travel with their father to all the great palaces of Europe. Little Wolfgang likes to play and pull pranks like most boys his age. He has trouble understanding the adult world and dealing with all his obligations. To help him cope, his sister invents a secret kingdom called Rucken that they both can escape to and unwind. Based on Nannerl’s diaries, this book offers a very credible, endearing look at Wolfgang Amadeus Mozart’s life.