While the European military bands of the 18th century introduced the percussion instruments of the Ottoman janissary bands, a reciprocal influence emerged in the 19th century in the form of the Europeanisation of the Ottoman army band. In 1827, Giuseppe Donizetti, the elder brother of the renowned Italian opera composer Gaetano Donizetti, was invited to become Master of Music to Sultan Mahmud II. A successor of Donizetti was the German musician Paul Lange, formerly music lecturer at the American College for Girls and at the German High School, who took over the position of Master of the Sultan's Music after the Young Turkish revolution in 1908 and kept it until his death in 1920. A son of Paul Lange was the Istanbul-born American conductor Hans Lange. The Ottoman composer Leyla Saz (1850–1936) provides an account of musical training in the Imperial Palace in her memoirs. As daughter of the Palace surgeon, she grew up in the Imperial harem where girls were also given music lessons in both Turkish and Western styles.