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rhyolite

(Encyclopedia)rhyolite, fine-grained light-colored acidic volcanic rock. Rhyolite is chemically the equivalent of granite, and is thus composed primarily of quartz and orthoclase feldspar with subordinate amounts o...

syenite

(Encyclopedia)syenite sīˈənīt [key], coarse-grained igneous rock, similar in appearance and composition to granite. Unlike granite, it contains little or no quartz. The chief minerals in syenite are the feldspa...

Vogler, Georg Joseph

(Encyclopedia)Vogler, Georg Joseph gāˈôrkh yōˈzĕf fōˈglər [key], 1749–1814, German composer and organist, known as Abbé Vogler. He traveled widely, giving organ concerts and demonstrating his innovation...

Lutosławski, Witold

(Encyclopedia)Lutosławski, Witold, 1913–94, Polish composer, b. Warsaw, studied Univ. of Warsaw, Warsaw Conservatory. His early works were mainly neoclassical and often included elements from Polish folk music, ...

Babbitt, Milton

(Encyclopedia)Babbitt, Milton, 1916–2011, American composer, b. Philadelphia. Babbitt turned to music after studying mathematics. He studied composition with Roger Sessions at Princeton, and taught there from 193...

Thomson, Virgil

(Encyclopedia)Thomson, Virgil, 1896–1989, American composer, critic, and organist, b. Kansas City, Mo. Thomson studied in Paris with Nadia Boulanger. Until about 1926 he wrote in a dissonant, neoclassic style, bu...

Ireland, John, English composer

(Encyclopedia)Ireland, John, 1879–1962, English composer. Inspired by visits to the Channel Islands, he wrote music of a simple, rugged beauty. His many songs include the cycle Songs of a Wayfarer (1903) and Sea ...

Mathews, Max Vernon

(Encyclopedia)Mathews, Max Vernon, 1926–2011, American engineer known as the father of computer music, b. Columbus, Nebr., grad. California Institute of Technology (B.S., 1950), Massachusetts Institute of Technol...

Vivaldi, Antonio

(Encyclopedia)Vivaldi, Antonio äntôˈnyō vēvälˈdē [key], 1678–1741, Italian composer. He was the greatest master of Italian baroque, particularly of violin music and the concerto grosso. Vivaldi received h...

Fela

(Encyclopedia)Fela (Fela Anikulapo Kuti), 1938–97, Nigerian musician and political activist, b. Olufela Olusegun Oludotun Ransome-Kuti, studied Trinity College of Music, London. He was the originator of Afrobeat,...