Baroque music of the British Isles produce an indigenous tradition. However, arguably the most significant British composer of the era, George Frideric Handel, was a naturalised German, who helped integrate British and continental music and define the future of the classical music of the United Kingdom that would be officially formed in 1801. With the Restoration of the monarchy in 1660, Charles II made the court once more the centre of musical patronage in Britain, the theatres were reopened and, after the introduction of a new Book of Common Prayer in 1662, choral music began to be developed again. The king's time on the continent, his
Chamber music 19th century saw dramatic changes in society and in music technology which had far-reaching effects on the way chamber music was composed and played. Throughout the 18th century, the composer was normally an employee of an aristocrat, and the chamber music he or she composed was for the pleasure of aristocratic players and listeners. Haydn, for example, was an employee of Nikolaus I, Prince Esterházy, a music lover and amateur baryton player, for whom Haydn wrote many of his string trios. Mozart wrote three string quartets for the King of Prussia, Frederick William II, a cellist. Many of Beethoven's quartets