Series: Robot Music I, Robot Music II: Modes, Robot Music III: The Circle of Fifths, Robot Music IV: Scales of the World

Robot Music Logo - Circle of Fifths

New logo baby.

Robot Music I proved that a pleasing song can be randomly generated under the right guidelines. Those guidelines stuck to a 4/4 rhythm and the C Major Pentatonic Scale.

Robot Music II proved that the C key could be replaced with any other (changing the root). It also showed that the Major Pentatonic Scale (5 notes) could be expanded to the Major Scale (7 notes) without harming our method. And most importantly, this section covered modes and demonstrated that shifting a song’s mode can significantly change its tone. Knowing that the tone can be changed, how can we control it?

Robot Music III introduces the Circle of Fifths. It is a basic musical tool that will help us predict the impact of a mode of the Major Scale. With it, our Robot can place notes along 2 dimensions (Consonance vs. Dissonance, Dominance vs. Sub-Dominance) and estimate the emotional impact of a note according to an arbitrary algorithm based on personal tastes.

This installment is the first to go into the perception of music. To begin, we must discuss aural perception and some musical fundamentals. That technical information will be related to our previous musical concepts by the use of the Circle of Fifths. And finally, a demonstration of mode relationships and some discussion of their popular uses.

You probably already know some of this, so I’ll try to move fast.

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