A method of creating a visual representation of a musical work. Data processing apparatus analyzes the work, determines attributes, including a the pitch and duration of each note, and creates a data file which is used output the work in a form readable by the human eye. Symbols representing notes are placed on a grid at vertical positions in accordance with their pitch, and horizontal positions representing time. A first basic symbol is assigned to the natural notes in an octave, a second basic symbol is assigned to sharp accidentals, and a third basic symbol is assigned to flat accidentals. The horizontal extent of the symbols represents note duration. Each of the seven natural notes in an octave is assigned a color and a vertical position on the grid, and the sharp accidental and flat accidental notes are assigned the same color and vertical position as the associated natural note.