Who was Maria Anna “Nannerl” Mozart?

Maria Anna Mozart (1751–1829), affectionately known as "Nannerl," was the older sister of Wolfgang Amadeus Mozart and one of only two of their parents' seven children to survive infancy.12

Like her brother, Nannerl was a highly talented musician and an accomplished clavierist. Recognizing their extraordinary abilities, their father, Leopold Mozart, took both children on a prolonged tour of western Europe beginning in 1763. During this time, the siblings performed in major cities including Munich, Paris, and London, where they frequently played and improvised for imperial courts and noble houses. While Wolfgang is remembered as a precocious genius, Nannerl was also a central figure in these early exhibitions, which Leopold viewed as his God-given obligation to share with the world.123