Polychoral Antiphony
When two or more groups of singers sing in alternation the style of music can also be called 'polychoral'. Specifically, this term is usually applied to music of the late Renaissance and early Baroque. Polychoral techniques are a definitive characteristic of the music of the Venetian school, exemplified by the works of Giovanni Gabrieli; this music is often known as the Venetian polychoral style. The Venetian polychoral style was an important innovation of the late Renaissance, and this style, with its variations as it spread across Europe after 1600, helped to define the beginning of the Baroque era. Polychoral music was not limited to Italy in the Renaissance; it was popular in Spain and Germany, and there are examples from the 19th and 20h centuries, from composers as diverse as Hector Berlioz, Igor Stravinsky and Karlheinz Stockhausen.
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