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www.reference.com/article/different-courses-music-f7ed6dbd03e04302

Some courses in music include Massachusetts Institute of Technology’s Music and Technology, Open University’s An Introduction to Music Theory, Yale University’s Listening to Music and Harvard University’s The Unanswered Question Lectures. These free online courses offer students the opportunity to s

www.reference.com/history/1950s-era-called-b6e74196e06a7005

When describing the 1950s, many historians use the word "boom." This is because of the prosperous economy, the increasing number of people moving to the suburbs and the population explosion known as the "baby boom." Other people called it America's "golden age." The period between 1946 and 1964, whic

www.reference.com/article/calculate-baseball-player-s-era-af68475532be4909

Calculate a baseball player’s ERA or earned run average, by dividing the number of earned runs allowed by the number of innings pitched, and multiply by nine. ERA represents the average number of earned runs pitchers give up per nine-inning game and is the primary measure of a pitcher’s effectivenes

www.reference.com/article/did-silent-film-era-come-end-3c8d3f58e2f37701

The end of the silent era of films began on Oct. 6, 1927, when Warner Brothers released "The Jazz Singer," the first full-length movie with synchronized dialogue. Studios continued to make silent films, but they slowly faded from popularity over the following decade.

www.reference.com/history/gothic-era-2303c8c06bb6c368

The Gothic era began in the 12th century and lasted until as late as the 16th century in some areas. The term "Gothic" was derived from the Gothic tribes that had sacked Rome centuries before. The art and architecture of the time period are considered the most important contributions of the Gothic e

www.reference.com/article/did-reconstruction-era-end-b45e2b2b219ca458

The Reconstruction Era, which occurred after the U.S. Civil War, officially ended after President Rutherford B. Hayes took office on March 4, 1877. Though the hold of Reconstruction policies had been waning for years, as the Republican party's attention turned away from the South, the presidential e

www.reference.com/article/victorian-era-71e693d64eb7af83

The Victorian Era, named for Great Britain's Queen Victoria, began in 1837 and ended in 1901. It is remembered for its embrace of middle class values associated with the expansion of the middle class that occurred as a result of the Industrial Revolution,

www.reference.com/article/instruments-were-introduced-romantic-era-a4bba62a4cfc2614

The contrabassoon, bass clarinet, piccolo, xylophone, harp, accordion and arpeggione were introduced during the Romantic era. These instruments allowed composers to capture the emotions that they wanted to express in their music.

www.reference.com/science/geologic-era-right-now-dea110c608f212d

The geologic era in which humans have evolved and spread over the Earth is the Cenozoic Era. This time period began roughly 65 million years before the start of the 21st century.

www.reference.com/history/did-victorian-era-start-end-3e0ef079c8bd827f

The Victorian era lasted 20 years and began on June, 20 1837. The era ended an Jan. 22, 1901. The Victorian era occurred in British history and took place during the reign of Queen Victoria.