- published: 12 Jun 2013
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An étude (/ ˈeɪtjuːd /; French pronunciation: [eˈtyd], a French word meaning study) is an instrumental musical composition, most commonly of considerable difficulty, usually designed to provide practice material for perfecting a particular technical skill. The tradition of writing études emerged in the early 19th century with the rapidly growing popularity of the piano. Of the vast number of études from that era some are still used as teaching material (particularly pieces by Carl Czerny and Muzio Clementi), and a few, by major composers such as Frédéric Chopin, Franz Liszt, Claude Debussy and Charles-Valentin Alkan, achieved a place in today's concert repertory. Composers of the 20th century variously composed études related to the old tradition (György Ligeti), études that required wholly unorthodox technique (John Cage), and études that required unusually facile technique.
Studies, "lessons" and other didactic instrumental pieces composed before the 19th century are very varied, without any established genres. The pieces in lute instruction books, such as the celebrated Varietie of Lute-Lessons (1610), may be arranged in order of increasing difficulty, but will usually include both simple teaching pieces and masterworks by renowned composers. Domenico Scarlatti's 30 Essercizi per gravicembalo ("30 Exercises for harpsichord", 1738) do not differ in scope from his other keyboard works, and Johann Sebastian Bach's four volumes of Clavier-Übung ("keyboard practice") contain everything from simple organ duets to the extensive and difficult Goldberg Variations.
A house is a building or structure that has the ability to be occupied for habitation by humans or other creatures. The term house includes many kinds of dwellings ranging from rudimentary huts of nomadic tribes to complex structures composed of many systems.English-speaking people generally call any building they routinely occupy "home".
The social unit that lives in a house is known as a household. Most commonly, a household is a family unit of some kind, though households may be other social groups, organizations or individuals.
The English word house derives directly from Old English Hus meaning "dwelling, shelter, home, house," which in turn derives from Proto-Germanic Khusan (reconstructed by etymological analysis) which is of unknown origin. The house itself gave rise to the letter 'B' through an early Proto-Semitic hieroglyphic symbol depicting a house. The symbol was called "bayt", "bet" or "beth" in various related languages, and became beta, the Greek letter, before it was used by the Romans.