A graphic score is a way in which a composer can compose a piece of music without using common music notation. It is the representation of music through the use of visual symbols.
The graphic score evolved in the 1950’s and composers often rely on graphic notation in experimental music, where the standard musical notation can be ineffective.
When using graphic scores, each instrument is assigned a different symbol, whether it be simple or complicated. These symbols are then put into to a graphic score with each separate symbol corresponding to a musical instrument.