what is the circle of fifths?

Question

I know i learned this but i forget the meaning of it all and it's applicaiton to music composition

Answer 1

In Music Theory, a fifth is defined as seven half steps or
from C to G - -you can keep going up by fifths - until you return to C

C-G-D-A- E - B- F#- C# - G# - D# - A# (B flat) - F - C (rewrite)

now, not all 'fifths' are perfect - some are shaded lower
because if they were perfect - when you got back to C -
it would actually be halfway between C and C#

note how some keys to play in are mellow - e.g., A flat
and some are BRILLIANT - A Major (March Militaire)

Answer 2

It applies to keys. The most dominant chord-after the primary- in a given key is the V or fifth chord. If you then make that fifth chord your key and take its fifth as your next key and do that twelve times total you will end up back at your starting key. Nifty. The fifth is the chord western grown ears gravitate to most in a chord progression.

Answer 3

im not completely sure,
but its a chart where it shows all the scales: major, minor etc and tells you which notes to play and whether to flat/sharpen them