What is Circle Of Fifths? please tell me about Circle Of Fifths and why it is so important.
A: The circle of fifths is simply a geometric diagram that makes it easy to see the relationship between all the keys in music. If you look at the diagram, you will find the key of C up on top. The key of C is at the top because it has no sharps or flats. The next one to the right is the key of G and it has one sharp (an F sharp by the way). G is a perfect 5th from C, count the notes and you will see: C-D-E-F-G. A perfect 5th from G is D, and the key of D has two sharps so D is the next key after G.
If you tape the chart on your wall and look at it before you go to sleep, it will start to make sense to you. It simply makes it easy to remember the keys and their corresponding sharps and flats.
Sometimes the circle gets used to make progressions. A good example would be ii-V-Is taken around the circle. So the first one would be a ii-V-I in C: Dmin7-G7-Cmaj7. the next ii-V-I would be taken from the next key down, the key of G: Amin7-D7-Gmaj7, etc.. You could also take the same ii-V-Is the other way aroung the circle of 4ths. Ex: Dmin7-G7-Cmaj7, Gmin7-C7-Fmaj7, Cmin7-F7-Bbmaj7, etc..