Quotes

There is music in the air, music all round us: the world is full of it, and you simply take as much as you require.

Edward Elgar (1857 - 1934)
British composer, conductor, and violinist

Tuesday, April 1, 2008

The Elements Of Music

The Elements of Music consists of the factors which makes different kinds of music. These elements makes listening to sound - music to some ears & noise to others.

These Elements of Music can be categorised as:


  • Pitch:

    Although most musical cultures share the concept of highness and lowness of pitch, awareness of this concept is not inborn. Psychological studies have demonstrated that few five-year-olds understand the concept of high and low pitch, whereas most nine-year-olds do. Pitch depends on the rate of vibration, or frequency, of sound waves that produce a particular tone. Higher pitches have a higher frequency (greater rapidity of vibrations) than lower pitches. Most musical cultures recognize the octave, a unique relationship of two pitches. Two pitches are an octave apart when their rates of vibration form an exact 1:2 ratio. Tones an octave apart blend together so smoothly that listeners often confuse the two tones or think they are hearing a single tone.

    Pitch is the perceived fundamental frequency of a sound. While the actual fundamental frequency can be precisely determined through physical measurement, it may differ from the perceived pitch because of overtones, or partials, in the sound. The human auditory perception system may also have trouble distinguishing frequency differences between notes under certain circumstances.

    Pitch naming systems reflect this similarity by giving notes an octave apart the same name (A, B, C, for example, in Western music). Most musical cultures recognize the concepts of pitch and octave, but not all. For example, there is no Japanese word for octave although what Westerners call octave is found in traditional Japanese music.

    Each musical culture has one or more sets of tunings that define the gaps or intervals between pitches in that group’s music. By the 18th century, most Western music was based on 12 equivalent intervals per octave. This system is represented by the Chromatic Scale. Its 12 equally spaced tones per octave, called half-steps or semitones, can be heard by playing the tones that correspond to 12 adjacent frets on a guitar fretboard, or to 12 adjacent keys on any modern Western keyboard instrument. The semitone is the smallest gap in traditional Western music, but smaller intervals (collectively referred to as microtones) are used in some modern Western music, as well as in some other musical cultures.

    Again, learning plays an important role in what pitch relations are considered pleasing. In a psychological study early in the 20th century, participants spent several months becoming familiar with the sound of a scale based on such small intervals that all 12 scale members fit within a standard half-step. By the end of the learning period, many participants stated that this microtonal scale sounded very natural, and they could recognize melodies composed with this scale. Some participants even stated that the top note of the scale seemed twice as high as the lowest note—the description Western musicians typically give to the octave.

    For the past several centuries, the preferred underlying pitch structure in Western art music has been the diatonic scale. This scale consists of seven tones related by a total of five whole-steps and two half-steps, arranged in the sequence from C to C of the white keys of a modern piano or organ. Depending on the pitch relationships among whole-steps and half-steps, scale systems are referred to as either major or minor, or as a specific kind of ecclesiastical or church mode.

  • Scale:

    A great deal of Western folk music, along with much folk music and art music around the world, conforms to a five-tone, or pentatonic, scale. The best-known form of the pentatonic scale contains no half steps. Instead, it is made up of three whole-steps and two step-and-a-half intervals. The black keys on a modern piano or organ keyboard produce a pentatonic scale.

    In music, a scale is a group of musical notes that provides material for part or all of a musical work. Scales are ordered in pitch or pitch class, with their ordering providing a measure of musical distance. Scales differ from modes in that scales do not have a primary or "tonic" note. Thus a single scale can have many different modes, depending on which of its notes is chosen as primary. The distance between two successive notes in a scale is called a "scale step." Composers often transform musical patterns by moving every note in the pattern by a constant number of scale steps: thus, in the C major scale, the pattern C-D-E ("doe, a deer") might be shifted up a single scale step to become D-E-F ("ray, a drop"). This process is called scalar transposition. Since the steps of a scale can have various sizes, this process introduces subtle melodic and harmonic variation into the music. This variation is what gives scalar music much of its complexity.

    Scales are typically listed from low to high. A scale is octave-repeating when every pitch in the scale appears in every possible octave. An octave-repeating scale can be represented as a circular arrangement of pitch classes, ordered by increasing (or decreasing) pitch class.

    For instance, the increasing C major scale is, C-D-E-F-G-A-B-[C], with the bracket indicating that the last note is an octave higher than the first note. Or C-B-A-G-F-E-D-[C], with the bracket indicating an octave lower than the first note in the scale.

    This single scale can be manifested at many different pitch levels.
    For example a C major scale can be started at C4 (middle C) and ascending an octave to C5; or it could be started at C6, ascending an octave to C7.

    Scales may be described according to the intervals they contain. Scales can be abstracted from performance or composition. They are also often used precompositionally to guide or limit a composition. Explicit instruction in scales has been part of compositional training for many centuries. One or more scales may be used in a composition, such as in Claude Debussy's L'Isle Joyeuse. Below, the first scale is a whole tone scale, while the second and third scales are diatonic scales. All three are used in the opening pages of Debussy's piece.



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