Concept
Graphic notation (or graphic score) is the representation of music through the use of visual symbols outside the realm of traditional music notation. Graphic notation became popular in the 1950s, and can be used either in combination with or instead of traditional music notation. Graphic notation was influenced by contemporary visual art trends in its conception, bringing stylistic components from modern art into music. Composers often rely on graphic notation in experimental music, where standard musical notation can be ineffective. Other uses include pieces where an aleatoric or undetermined effect is desired. One of the earliest pioneers of this technique was Earle Brown, who, along with John Cage, sought to liberate performers from the constraints of notation and make them active participants in the creation of the music. Graphic notation is characterized by its variability and lack of standardization. According to Baker's Student Encyclopedia of Music, Vol. 1, "Graphic notation is used to indicate extremely precise (or intentionally imprecise) pitch or to stimulate musical behavior or actions in performance." Modern graphic notation relies heavily on the imagination and inspiration of each individual performer to interpret the visual content provided by the composer. Because of this relative freedom, the realization of graphically notated pieces usually varies from performance to performance. For example, in notation indication "E" of his piece Concert for Piano and Orchestra, John Cage writes: "Play with hands indicated. Where clefs differ, a note is either bass or treble", an indeterminacy which is not unusual in Cage's work, and which leaves decision-making up to the performer. Some graphic scores can be defined as action-based, where musical gestures are notated as shapes instead of conventional musical ideas. The use of graphic notation within a score can vary widely, from the score being made up entirely of graphic notation to graphic notation being a small part of an otherwise largely-traditional score.