Mozart most commonly called himself Wolfgang Amadé or Wolfgang Gottlieb. His father, Leopold, came from a family of good standing (from which he was estranged), which included architects and bookbinders. Leopold was the author of a famous violin-playing manual, which was published in the very year of Mozart’s birth. His mother, Anna Maria Pertl, was born of a middle-class family active in local administration. Mozart and his sister Maria Anna (“Nannerl”) were the only two of their seven children to survive.

The boy’s early talent for music was remarkable. At three he was picking out chords on the harpsichord, at four playing short pieces, at five composing. There are anecdotes about his precise memory of pitch, about his scribbling a concerto at the age of five, and about his gentleness and sensitivity (he was afraid of the trumpet). Just before he was six, his father took him and Nannerl, also highly talented, to Munich to play at the Bavarian court, and a few months later they went to Vienna and were heard at the imperial court and in noble houses.

“The miracle which God let be born in Salzburg” was Leopold’s description of his son, and he was keenly conscious of his duty to God, as he saw it, to draw the miracle to the notice of the world (and incidentally to profit from doing so). In mid-1763 he obtained a leave of absence from his position as deputy Kapellmeister at the prince-archbishop’s court at Salzburg, and the family set out on a prolonged tour. They went to what were all the main musical centres of western Europe—Munich, Augsburg, Stuttgart, Mannheim, Mainz, Frankfurt, Brussels, and Paris (where they remained for the winter), then London (where they spent 15 months), returning through The Hague, Amsterdam, Paris, Lyon, and Switzerland, and arriving back in Salzburg in November 1766. In most of these cities Mozart, and often his sister, played and improvised, sometimes at court, sometimes in public or in a church. Leopold’s surviving letters to friends in Salzburg tell of the universal admiration that his son’s achievements aroused. In Paris they met several German composers, and Mozart’s first music was published (sonatas for keyboard and violin, dedicated to a royal princess); in London they met, among others, Johann Christian Bach, Johann Sebastian Bach’s youngest son and a leading figure in the city’s musical life, and under his influence Mozart composed his first symphonies—three survive (K 16, K 19, and K 19a—K signifying the work’s place in the catalog of Ludwig von Köchel). Two more followed during a stay in The Hague on the return journey (K 22 and K 45a).