How to write a Fugue (the bullshit subject Britney Spears Edition)
Fugue is a type of contrapuntal composition or compositional technique, for a specific number of parts or voices (referred to as "voices" regardless of whether the work is vocal or instrumental). The form evolved during the 17th century from several earlier types of contrapuntal compositions (imitative ricercars, capriccios, canzonas, fantasias, etc.).
One main theme (the "subject") sounds in successive imitation in each voice; when each voice has entered, the exposition is complete. This is usually followed by a connecting passage, (usually termed an episode) often developed from the opening material and further "entries" of the subject (in related keys). Episodes and entries will alternate until the "final entry" of the subject, in the same key as the opening (the tonic), followed by a coda. In this sense, fugue is a style, rather than fixed structure, of composition, and though there are certain established practices, in writing the exposition for example, composers approach the style with varying degrees of freedom and individuality.
The English term fugue originates in the 16th century and is derived from either the French or Italian fuga, which in turn comes from Latin, also fuga, which is itself related to both fugere (‘to flee’) and fugare, (‘to chase’). The adjectival form is fugal. Variants include fughetta (literally, 'a small fugue') and fugato (a passage in fugal style within another work that is not a fugue).
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