Sir Edward William Elgar, 1st Baronet  (2 June 1857 - 23 February 1934) was an English composer, many of whose works have entered the British and international classical concert repertoire. Among his best-known compositions are orchestral works including the Enigma Variations, the Pomp and Circumstance Marches, concertos for violin and cello, and two symphonies. He also composed choral works, including The Dream of Gerontius, chamber music and songs. He was appointed Master of the King's Musick in 1924.

During the 1890s, Elgar gradually built up a reputation as a composer, chiefly of works for the great choral festivals of the English Midlands. The Black Knight (1892) and King Olaf (1896), both inspired by Longfellow, The Light of Life (1896) and Caractacus (1898) were all modestly successful, and he obtained a long-standing publisher in Novello and Co. Other works of this decade included the Serenade for Strings (1892) and Three Bavarian Dances (1897). Elgar was of enough consequence locally to recommend the young composer Samuel Coleridge-Taylor to the Three Choirs Festival for a concert piece, which helped establish the younger man's career. Elgar was catching the attention of prominent critics, but their reviews were polite rather than enthusiastic. Although he was in demand as a festival composer, he was only just getting by financially and felt unappreciated. In 1898, he said he was "very sick at heart over music" and hoped to find a way to succeed with a larger work. His friend August Jaeger tried to lift his spirits: "A day's attack of the blues ... will not drive away your desire, your necessity, which is to exercise those creative faculties which a kind providence has given you. Your time of universal recognition will come."  In 1899, that prediction suddenly came true. At the age of forty-two, Elgar produced the Enigma Variations, which were premiered in London under the baton of the eminent German conductor Hans Richter. In Elgar's own words, "I have sketched a set of Variations on an original theme. The Variations have amused me because I've labelled them with the nicknames of my particular friends ... that is to say I've written the variations each one to represent the mood of the 'party' (the person) ... and have written what I think they would have written - if they were asses enough to compose". He dedicated the work "To my friends pictured within". Probably the best known variation is "Nimrod", depicting Jaeger. Purely musical considerations led Elgar to omit variations depicting Arthur Sullivan and Hubert Parry, whose styles he tried but failed to incorporate in the variations. The large-scale work was received with general acclaim for its originality, charm and craftsmanship, and it established Elgar as the pre-eminent British composer of his generation.  The work is formally titled Variations on an Original Theme; the word "Enigma" appears over the first six bars of music, which led to the familiar version of the title. The enigma is that, although there are fourteen variations on the "original theme", there is another overarching theme, never identified by Elgar, which he said "runs through and over the whole set" but is never heard. Later commentators have observed that although Elgar is today regarded as a characteristically English composer, his orchestral music and this work in particular share much with the Central European tradition typified at the time by the work of Richard Strauss. The Enigma Variations were well received in Germany and Italy, and remain to the present day a worldwide concert staple.

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