The main idea behind chordgram notation is the positional representation of chord tones. This means that any information about a particular chord tone must be displayed in a unique, well-defined location in the chord symbol printing area. One such location plays the role of a label, to be filled with precise instructions on how to play the corresponding chord tone.
One great advantage of a positional notation is that it dispenses with the use of numbers to distinguish between chord tones. Chord representation can be reduced to a few symbols, suitably distributed among the chord tone labels. These symbols act as modifiers, which behave like accidental marks, but may perform more general tasks.
Chordgrams adopt an optimal positioning convention for tone labels (in a sense that will become clear soon), along with a simple, aesthetically appealing set of modifier symbols. They are both very easy to learn and remember, and are designed to simplify the notation of the most frequently used chords, without becoming cumbersome when dealing with more complex harmonies. The following two sections describe in detail the chordgram positional structure and modifier set.
No comments:
Post a Comment