A musical instrument is a device created or adapted for the purpose of
making musical sounds. In principle, any object that produces sound can serve as a musical instrument—it is through
purpose that the object becomes a musical instrument. The history of musical
instruments dates back to the beginnings of human culture. The purpose of early
musical instruments was ritual: a hunter might use a trumpet to signal success on the hunt, or a shaman
might use a drum in a religious ceremony.
Cultures later developed the processes of composing and performing melodies for entertainment. Musical
instruments evolved in step with changing applications.
Wednesday, September 19, 2012
The sound of rock
The sound of rock is traditionally centered around the electric guitar, which
emerged in its modern form in the 1950s with the popularization of rock and
roll. The sound of the
electric guitar in rock music is typically supported by the electric bass guitar pioneered in jazz
music in the same era, and percussion
produced from a drum kit that
combines drums and cymbals. This trio of
instruments has often been complemented by the inclusion of others, particularly
keyboards such as the piano, Hammond organ and synthesizers.A group of musicians
performing rock music is termed a rock band or rock group and typically consists of between two and
five members. Classically, a rock band takes the form of a quartet whose members cover one or more roles,
including vocalist, lead guitarist, rhythm guitarist, bass
guitarist, drummer and
occasionally that of keyboard player or other instrumentalist.
Rock music is traditionally built on a foundation of simple unsyncopated rhythms in a 4/4 meter, with a repetitive snare drum back beat on beats two and four.Melodies are often derived from older musical modes, including the Dorian and Mixolydian, as well as major and minor modes. Harmonies range from the common triad to parallel fourths and fifths and dissonant harmonic progressions. Rock songs from the mid-1960s onwards often used the verse-chorus structure derived from blues and folk music, but there has been considerable variation from this model. Critics have stressed the eclecticism and stylistic diversity of rock.Because of its complex history and tendency to borrow from other musical and cultural forms, it has been argued that "it is impossible to bind rock music to a rigidly delineated musical definition."
Rock music is traditionally built on a foundation of simple unsyncopated rhythms in a 4/4 meter, with a repetitive snare drum back beat on beats two and four.Melodies are often derived from older musical modes, including the Dorian and Mixolydian, as well as major and minor modes. Harmonies range from the common triad to parallel fourths and fifths and dissonant harmonic progressions. Rock songs from the mid-1960s onwards often used the verse-chorus structure derived from blues and folk music, but there has been considerable variation from this model. Critics have stressed the eclecticism and stylistic diversity of rock.Because of its complex history and tendency to borrow from other musical and cultural forms, it has been argued that "it is impossible to bind rock music to a rigidly delineated musical definition."
Rock music
Rock music is a genre of popular music that originated as "rock and roll in 1950s America and developed into a range of different styles in the 1960s and later, particularly in the United Kingdom and the United States.It has its roots in 1940s' and 1950s' rock and roll, itself heavily influenced by rhythm and blues and country music. Rock music also drew strongly on a number of other genres such as blues and folk, and incorporated influences from jazz, classical and other musical sources.
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