Mozart’s final three symphonies were composed, according to Mozart’s autograph Verzeichnüß, in the space of a few weeks, from late June to early August 1788. During that year the 11-year-old Hummel was a resident pupil of Mozart and would have been a daily witness to the creation of these foundational works of the Western musical canon. There is an almost total lack of documentary evidence concerning the circumstances of these works, however, which has led to considerable speculation as to their...