To everyone who has heard of my famous younger brother, Wolfgang, but has never heard of me. Maria Anna "Nannerl" Mozart makes music fit for angels. Songs pour from her like water over the Austrian riverbanks in springtime. When she and her brother play the harpsichord together, she feels confident and carefree. But everything changes when Wolfgang plays a sonata Nannerl has composed. Papa fumes. Girls are not allowed to compose! Girls belong behind the curtain! Nannerl is pressed into a marriage after she turns eighteen that stifles her song, but her creativity and love for her brother still soars. With vivid, evocative art by Adelina Lirius, author Audrey Ades tells a powerful story about music, feminism, ambition, and the girl who was and always will be a Mozart.