Originally Posted by: binfordtoolsThanks for the help so far.
I think I understand the c major chord thing. It's made up from a C, E, G.
C = root
E = third
G = fifth
I believe that it comes from this:
C D E F G A B C
1 2 3 4 5 6 7
Is this correct?
Thanks
Absolutely! What you have there is a triad built from the major scale starting at C. A seventh chord will include that 7th scale tone, a ninth will include the 1, 3, 5, 7, and 2, an 11th will include 1, 3, 5, 7, 2, and 4, and a 13th is just a chord made of all the scale tones. A major scale (like any scale) is simply a series of notes that have a certain pattern to the harmonic intervals between them. From 1 (C) to two (D) it is one "whole step" (two frets up on the guitar), from D to E is another whole step, etc. In the end, the order of steps in a major scale is
whole whole half whole whole whole whole half
C to D to E to F to G to A to B back to C
Which is why the third in a Dmajor chord is an "F#."
See, it's a whole step from D to E, but it's only a half step from E to F (one fret). Because you need a second whole step interval, you move the F up a half step, making it F#. There's an easier way of determining the notes of a key called the circle of fifths, and I'll spell it out for you here.
Remember this, first, the order of sharps is "F-C-G-D-A-E-B"
(Fat Cats Go Down Alleys Eating Birds), which means that whenever a key has ONE sharp, that sharp is F. If the key signature has TWO sharps, it's F and C, etc.
C major has no sharps. Now we'll use the circle of fifths to determine what major key signature has one sharp.
Basically, just go up a fifth from C, and you'll have it. Well, let's go up a fifth from C... C-D-E-F-G, ok, so the fifth is G. Now we'll spell out the G major scale:
G-A-B-C-D-E-F#-G
Ah HA! One sharp!
Now we'll continue along, up a fifth from G: G-A-B-C-D, ok, Dmajor has two sharps.
Anyhow, long story short, the major keys go like this:
C-G-D-A-E-B-F#-C#
and the minor keys go like this:
A-E-B-F#-C#-G#-D#
On to flats. The order of flats is the opposite of sharps, so just reverse it
B-E-A-D-G-C-F
Cmajor has no flats, and we'll go DOWN a fifth (not up) to determine the next key. C-B-A-G-F, ok, Fmajor has one flat. (oh, also, if you don't want to think about going down a fifth, just go up a fourth, it will bring you to the same note name: C-D-E-F, so sharps go up a fifth, flats go up a fourth).
Anyhow, the process continues and eventually it looks like this:
C-F-Bb-Eb-Ab-Db-Gb-Cb
For minor keys, start with A:
A-D-G-C-F-Bb-Eb-Ab
Ok, that's all I'll do for now, that's a whole lot to swallow.
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