What is the Circle of Fifths Concept?

The Circle of Fifths is a visual music tool represents to describes the relationships between the 12 tones of the chromatic scale, their corresponding key signatures, and the associated major and minor keys. The reason it’s called the circle of fifths is because of the interval relationships between each key signature. The Pythagorean Circle was the pillar of the Circle of Fifths. But Nikolay Diletsky in the year 1670 first invented the Circle of Fifths. Many modifications were made to improve the theory.  Until German musician, Johann David Heinichen in 1728 was created today’s improvised version.