The Circle of Fifths is basically to the relationship between the twelve notes on the chromatic scale. The guitar Circle of Fifths is also nice to memorize because it acts as a good rule of thumb for soloing, scales, tunings and much more when it comes to playing guitar. This is theory at its best right here… Look at the relationship between a note on the right side and the same note on the left, they have the same sounds and are basically the same note, however they have different names depending on the relative notes. I myself don’t refer to the guitar Circle of Fifths as much as I should, however, just make sure you understand the concept.
Circle of Fifths explained relationship/patters:
Here’s something fun to try…. Take simple chord, like a power chord for example. Find out all three notes of the power chord and what they’re comprised of. For example, a G power chord is composed of G (the root), D and then G (the root). Now go to my Circle of Fifths diagram and draw a line from G to D to G. Now drawing the same lines, you can take those lines and start them on D for example. That will give you the notes in the D power chord. Basically my point is that this Circle of Fifths diagram will help you to see the similarities between the notes and how these notes and music theory in general is nothing but patterns.