I wrote a story about Glenn Gould's Fugue.

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fuga

A form of musical composition. From the Italian "fugue ". It is a contrapuntal work with two or more voices based on a single theme, using complextechniques such as expansions, reductions, strettas , inversions, and retrogrades . Sometimes there are more than two themes, and these are called double or triple fugues according to the number of themes. A typical fugue usually has three parts. In a three-part fugue, the first voice presents the theme alone, and the second voice immediately responds by a fifth higher or a fourth lower. The third voice reintroduces the theme in the main key, and the first exposition ends when all the voices have presented the theme. The second part is a modulation, in which the theme appears in a different key, and in the conclusion, the theme is sung again in the main key, and the piece ends.The origin of the fugue can be seen in the introduction of imitation in polyphonic vocal music in the late 15th century, but it began as an independent form in the 17th century, and reached its peak as the highest form of imitation counterpoint in works such as JS Bach's The Well-Tempered Clavier and The Art of Fugue , and Handel 's Messiah . It then went into decline for a time, but was reevaluated in the 20th century, and works such as Shostakovich's 24 Preludes and Fugues, Hindemith's The Painter Matisse , and Stravinsky's Symphony of Psalms were written.