Salzburg. Four years later, he married Anna Maria in Salzburg. Leopold became the orchestra's deputy Kapellmeister in 1763. During the year of his son's birth, Leopold published a violin textbook, Versuch einer gründlichen Violinschule, which achieved success. When Nannerl was 7, she began keyboard lessons with her father, while her three-year-old brother looked on. Years later, after her brother's death, she reminisced: He often spent much time at the clavier, picking out thirds, which he was ever striking, and his pleasure showed that it sounded good.... In the fourth year of his age his father, for a game as it were, began to teach him a few minuets and pieces at the clavier.... He could play it faultlessly and with the greatest delicacy, and keeping exactly in time.... At the age of five, he was already composing little pieces, which he played to his father who wrote them down. These early pieces, K. 1–5, were recorded in the Nannerl Notenbuch. There is some scholarly debate about whether Mozart was four or five years old when he created his first musical compositions, though there is little doubt that Mozart composed his first three pieces of music within a few weeks of each other: K. 1a, 1b, and 1c. In his early years, Wolfgang's father was his only teacher. Along with music, he taught his children languages and academic subjects. Solomon notes that, while Leopold was a devoted teacher to his children, there is evidence that Mozart was keen to progress beyond what he was taught. His first ink-spattered composition and his precocious efforts with the violin were of his initiative and came as a surprise to Leopold, who eventually gave up composing when his son's musical talents became evident. 1762–73: Travel While Wolfgang was young, his family made several European journeys in which he and Nannerl performed as child prodigies. These began with an exhibition in 1762 at the court of Prince-elector Maximilian III of Bavaria in Munich, and at the Imperial Courts in Vienna and Prague. A long concert tour followed, spanning three and a half years, taking the family to the courts of Munich, Mannheim, Paris, London, Dover, The Hague, Amsterdam, Utrecht, Mechelen and again to Paris, and back home via Zurich, Donaueschingen, and Munich. During this trip, Wolfgang met many musicians and acquainted himself with the works of other composers. A particularly significant influence was Johann Christian Bach,