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{{etymology|From Middle English ''musik'', from Anglo-French ''musike'', from [[Latin]] ''musica'', from [[Greek]] μουσικη ''mousike''}}

{{etymology|From Middle English ''musik'', from Anglo-French ''musike'', from [[Latin]] ''musica'', from [[Greek]] μουσικη ''mousike''}}

[[Music]] as an [[art]], is a form consisting entirely of organized [[sound]] interspersed with periods of silence.<ref>[http://www.m-w.com/cgi-bin/dictionary?sourceid=Mozilla-search&va=Music Music] defined in the Merriam-Webster Online Dictionary.</ref> It takes its name from three [[Greek mythology|Greek]] goddesses known as the ''[[Muses]]'', who specialized in stimulation of an artist's or poet's mind.

[[Music]] as an [[art]], is a form consisting entirely of organized [[sound]] interspersed with periods of silence.<ref>[http://www.m-w.com/cgi-bin/dictionary?sourceid=Mozilla-search&va=Music Music] defined in the Merriam-Webster Online Dictionary.</ref> It takes its name from three [[Greek mythology|Greek]] goddesses known as the ''[[Muses]]'', who specialized in stimulation of an artist's or poet's mind.

=== Notes, intervals, and scales ===

=== Notes, intervals, and scales ===

Two tones played together form an ''interval''. The simplest of all intervals is the ''[[octave]]'', formed by two tones, one of whose frequencies is the exact double of the other. The full collection of tones that one can play between the two notes of an octave is called a ''[[musical scale|scale]].'' In Western music, most scales are ''semi-tonal'', with twelve tones between the octave notes. (The high end of the octave is considered a repetition of the low end, but at twice the frequency.) [[Oriental]] music commonly has ''quarter-tonal'' scales, with twenty-four separate tones within an octave. Quarter tones are often difficult to distinguish for a Western listener, and such music, as a result, tends to suggest the sinuous movement of a snake.

Two tones played together form an ''interval''. The simplest of all intervals is the ''[[octave]]'', formed by two tones, one of whose frequencies is the exact double of the other. The full collection of tones that one can play between the two notes of an octave is called a ''[[musical scale|scale]].'' In Western music, most scales are ''semi-tonal'', with twelve tones between the octave notes. (The high end of the octave is considered a repetition of the low end, but at twice the frequency.) [[Oriental]] music commonly has ''quarter-tonal'' scales, with twenty-four separate tones within an octave. Quarter tones are often difficult to distinguish for a Western listener, and such music, as a result, tends to suggest the sinuous movement of a snake.