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Eonta
''Eonta'' is a composition for piano, two trumpets, and three tenor trombones by Iannis Xenakis. It was written in 1963–64, and was premiered on December 16, 1964, by the Ensemble du Domaine Musical, with Yuji Takahashi on piano and Pierre Boulez conducting. (Takahashi had previously premiered Xenakis's solo piano work '' Herma''.) Its duration is approximately 18 minutes. Background ''Eonta'' was composed in response to a commission from the Domaine Musical in Paris. Xenakis recalled that the initial concept came to him while he was sitting in a boat at Tanglewood: "We were surrounded by a forest and I stroked the water with my hand. It was then that I first thought of the instruments to be used in ''Eonta''." (In his notes, he wrote: "Reflection in water. Water is the piano.") The bulk of the composition was written in Berlin, where Xenakis was living thanks to a scholarship from the Ford Foundation, during 1963–64, although some of the music, such as the opening piano solo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stochastic Music
Stochastic (, ) refers to the property of being well described by a random probability distribution. Although stochasticity and randomness are distinct in that the former refers to a modeling approach and the latter refers to phenomena themselves, these two terms are often used synonymously. Furthermore, in probability theory, the formal concept of a '' stochastic process'' is also referred to as a ''random process''. Stochasticity is used in many different fields, including the natural sciences such as biology, chemistry, ecology, neuroscience, and physics, as well as technology and engineering fields such as image processing, signal processing, information theory, computer science, cryptography, and telecommunications. It is also used in finance, due to seemingly random changes in financial markets as well as in medicine, linguistics, music, media, colour theory, botany, manufacturing, and geomorphology. Etymology The word ''stochastic'' in English was originally used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iannis Xenakis
Giannis Klearchou Xenakis (also spelled for professional purposes as Yannis or Iannis Xenakis; el, Γιάννης "Ιωάννης" Κλέαρχου Ξενάκης, ; 29 May 1922 – 4 February 2001) was a Romanian-born Greek-French avant-garde composer, music theorist, architect, performance director and engineer. After 1947, he fled Greece, becoming a naturalised citizen of France eighteen years later. Xenakis pioneered the use of mathematical models in music such as applications of set theory, stochastic processes and game theory and was also an important influence on the development of electronic and computer music. He integrated music with architecture, designing music for pre-existing spaces, and designing spaces to be integrated with specific music compositions and performances. Among his most important works are '' Metastaseis'' (1953–54) for orchestra, which introduced independent parts for every musician of the orchestra; percussion works such as '' Psappha'' (197 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parmenides
Parmenides of Elea (; grc-gre, Παρμενίδης ὁ Ἐλεάτης; ) was a pre-Socratic Greek philosopher from Elea in Magna Graecia. Parmenides was born in the Greek colony of Elea, from a wealthy and illustrious family. His dates are uncertain; according to doxographer Diogenes Laërtius, he flourished just before 500 BC, which would put his year of birth near 540 BC, but in the dialogue '' Parmenides'' Plato has him visiting Athens at the age of 65, when Socrates was a young man, c. 450 BC, which, if true, suggests a year of birth of c. 515 BC. He is thought to have been in his prime (or "floruit") around 475 BC. The single known work by Parmenides is a poem whose original title is unknown but which is often referred to as ''On Nature.'' Only fragments of it survive. In his poem, Parmenides prescribes two views of reality. The first, the Way of "Alethia" or truth, describes how all reality is one, change is impossible, and existence is timeless and uniform. The s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ivan Hewett
Ivan Hewett is a British music critic and author who specializes in classical music. Since 2009 he has been the chief music critic for British newspaper ''The Daily Telegraph''. Hewett has a particular interest in contemporary classical music, which was the topic of his 2003 book ''Music: Healing the Rift''. He is also active as a radio and television presenter. Life and career Ivan Hewett studied music at the University of Oxford, receiving a Master of Arts. He then attended the Royal College of Music to study music composition, and wrote music for television commercials for a year. Throughout the 1980s and in to the 1990s, Hewett unsuccessfully attempted to start a music festival, did research for the ''Man and Music'' program, on Granada TV, and assisted with Jonathan Miller's TV performance of Bach's ''St Matthew Passion''. He has contributed to music publications such as ''The Musical Times'' and ''Prospect'' since the 1980s. At various times, Hewett has also worked as a le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Guardian
''The Guardian'' is a British daily newspaper. It was founded in 1821 as ''The Manchester Guardian'', and changed its name in 1959. Along with its sister papers ''The Observer'' and ''The Guardian Weekly'', ''The Guardian'' is part of the Guardian Media Group, owned by the Scott Trust. The trust was created in 1936 to "secure the financial and editorial independence of ''The Guardian'' in perpetuity and to safeguard the journalistic freedom and liberal values of ''The Guardian'' free from commercial or political interference". The trust was converted into a limited company in 2008, with a constitution written so as to maintain for ''The Guardian'' the same protections as were built into the structure of the Scott Trust by its creators. Profits are reinvested in journalism rather than distributed to owners or shareholders. It is considered a newspaper of record in the UK. The editor-in-chief Katharine Viner succeeded Alan Rusbridger in 2015. Since 2018, the paper's main news ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glissando
In music, a glissando (; plural: ''glissandi'', abbreviated ''gliss.'') is a glide from one pitch to another (). It is an Italianized musical term derived from the French ''glisser'', "to glide". In some contexts, it is distinguished from the continuous portamento. Some colloquial equivalents are slide, sweep (referring to the "discrete glissando" effects on guitar and harp, respectively), bend, smear, rip (for a loud, violent gliss to the beginning of a note), lip (in jazz terminology, when executed by changing one's embouchure on a wind instrument), plop, or falling hail (a glissando on a harp using the back of the fingernails). On wind instruments, a scoop is a glissando ascending to the onset of a note achieved entirely with the embouchure. Portamento Prescriptive attempts to distinguish the glissando from the portamento by limiting the former to the filling in of discrete intermediate pitches on instruments like the piano, harp, and fretted stringed instruments have run u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vibrato
Vibrato (Italian language, Italian, from past participle of "wikt:vibrare, vibrare", to vibrate) is a musical effect consisting of a regular, pulsating change of pitch (music), pitch. It is used to add expression to vocal and instrumental music. Vibrato is typically characterised in terms of two factors: the amount of pitch variation ("extent of vibrato") and the speed with which the pitch is varied ("rate of vibrato"). In singing it can occur spontaneously through variations in the larynx. The vibrato of a string instrument and wind instrument is an imitation of that vocal function. Vibrato and tremolo The terms vibrato and tremolo are sometimes incorrectly used interchangeably, although (in the classical world) they are properly defined as separate effects with vibrato defined as a periodic variation in the pitch (frequency) of a musical note, and tremolo as a fast repetition of the same note (usually a semiquaver) in order to produce the audible effect of a longer note, es ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quarter Tone
A quarter tone is a pitch halfway between the usual notes of a chromatic scale or an interval about half as wide (aurally, or logarithmically) as a semitone, which itself is half a whole tone. Quarter tones divide the octave by 50 cents each, and have 24 different pitches. Quarter tone has its roots in the music of the Middle East and more specifically in Persian traditional music. However, the first evidenced proposal of quarter tones, or the quarter-tone scale (24 equal temperament), was made by 19th-century music theorists Heinrich Richter in 1823Julian Rushton, "Quarter-Tone", ''The New Grove Dictionary of Music and Musicians'', second edition, edited by Stanley Sadie and John Tyrrell (London: Macmillan, 2001). and Mikhail Mishaqa about 1840. Composers who have written music using this scale include: Pierre Boulez, Julián Carrillo, Mildred Couper, George Enescu, Alberto Ginastera, Gérard Grisey, Alois Hába, Ljubica Marić, Charles Ives, Tristan Murail, Krzysztof Pendere ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mathematical Logic
Mathematical logic is the study of logic, formal logic within mathematics. Major subareas include model theory, proof theory, set theory, and recursion theory. Research in mathematical logic commonly addresses the mathematical properties of formal systems of logic such as their expressive or deductive power. However, it can also include uses of logic to characterize correct mathematical reasoning or to establish foundations of mathematics. Since its inception, mathematical logic has both contributed to and been motivated by the study of foundations of mathematics. This study began in the late 19th century with the development of axiomatic frameworks for geometry, arithmetic, and Mathematical analysis, analysis. In the early 20th century it was shaped by David Hilbert's Hilbert's program, program to prove the consistency of foundational theories. Results of Kurt Gödel, Gerhard Gentzen, and others provided partial resolution to the program, and clarified the issues involved in pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Domaine Musical
The Domaine musical was a concert society established by Pierre Boulez in Paris, which was active from 1954 to 1973. Composers represented at its concerts included Boulez, Karlheinz Stockhausen, Olivier Messiaen, Luciano Berio, John Cage, Sylvano Bussotti, Mauricio Kagel, Hans Werner Henze, Henri Pousseur, Ernst Krenek, Gilbert Amy, Peter Schat and Gilles Tremblay, Betsy Jolas as well as earlier composers considered part of the Modernist movement in music. Its regular performers included the pianists Claude Helffer, Paul Jacobs, Yvonne Loriod Yvonne Louise Georgette Loriod-Messiaen (; 20 January 1924 – 17 May 2010) was a French pianist, teacher, and composer, and the second wife of composer Olivier Messiaen. Her sister was the Ondes Martenot player Jeanne Loriod. Biography Loriod ... and Marcelle Mercenier. References Music organizations based in France {{Music-org-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of International Subsidiaries Of IBM
IBM has had business internationally since before the company had a name. Early leaders of the companies that would eventually become IBM (Mr Hollerith, Mr Flint, and Mr Watson) all were involved in doing international business. In those early days, IBM had 70 foreign branches and subsidiaries worldwide.Black, ''IBM and the Holocaust,'' pg. 44. Competitors in the pre-World War II era included Remington Rand, Powers, Bull, NCR, Burroughs, and others. European HQ The European headquarters for IBM was originally in Paris. In 1935, Watson moved it to Geneva. The managers included Schotte, and later the controversial Werner Lier (see #Switzerland). Austria IBM was represented in Austria by Furth & Company until 1933, when a direct subsidiary was created. IBM did the 1934 Austrian census. A card-printing plant was built later. Germany annexed Austria in 1938. In late May, Thomas J Watson went to Berlin and got IBM's German subsidiary, Dehomag, to replace IBM's Austrian subsidiary ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
