Jimmy's Chord Theory TOC Lesson 3
A CHORD was thought to be the reduced essence of scales.
From the modern keyboard an entire song could be written
using only seven notes and two notes repeated
By using these three chords you establishthe KEY of C MAJOR.
You also establish a foundation for a song.
The song has
a beginning CEGC chord I
a middle FACF chord IV
a resolution GBDG chord V
and an option to continue CEG
or to come to an end on a CEGC chord I
How many melodies can you accompany with these chords?C F G C F G C
Technically a chord is two or more notes played
at the same time or in counterpoint moving in different
directions. Chords move either forward in progression
or backward in regression.I IV V : V IV I The same
principles apply to Beethoven as well as Megadeath.
Every song written to a KEY builds scales onI IV & V
no matter what the starting note is.Suppose D is the starting note chosen: I chord: D F# A
IV chord: G B D
V chord: A C# E
From this you could conclude yet another rule.I, IV & V chords all have the same intervals between
the notes of the chord.
Go back to the KEY of C and
number the notes of the C SCALE from one to eight:
C D E F G A B C
1 2 3 4 5 6 7 8
The essential notes of a C CHORD are C E G
The scale intervals are 1 3 5
Now the D SCALE: D CHORD
D E F# G A B C# D D F# A
1 2 3 4 5 6 7 8 1 3 5
E G# B F A C G B D A C# E B D# F#
1 3 5 1 3 5 1 3 5 1 3 5 1 3 5
What all these 1-3-5 chords have in common is that
they all form the bright, happy, outer, onion rings
of any KEY when they are built up as I, IV & V.
Now you see that every song written to a KEY is a
triangle of chords built on the 1-4-5 aspect of the
scale which begins and ends the song, while the chords
then are a stack of notes which can be any combination
such as 1-3-5, 3-5-1, 5-1-3, 3-1-5, 1-5-3 or 5-3-1
all of which reside in a family of chords called MAJOR.
Major keys, major scales and major chords
are made with the same intervals between notes.
1 0 1 0 1 1 0 1 0 1 0 1 1
scale: 1 2 3 4 5 6 7 8
and chord: 1 3 5
Every song in a major key is held together by three
major chords:I maj IV maj V maj
All the other chords in a key's SCALE OF CHORDS are
3 MINOR CHORDS, plus one DIMINISHED CHORD.
For example:I maj II min III min IV maj V maj VI min VII dim
correspond to chord Names:
C, D minor, E minor, F, G, A minor, B diminished
Put more simply, if the melody of your song happened
to be the same notes as a C MAJOR SCALE, that is:
C D E F G A B, then the accompanying chords would be
Cmaj Dmin Emin Fmaj Gmaj Amin and Bdim.
comprise a major chord!
NEXT: LESSON 5
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