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Guitar Chords and Formula’s

The table below illustrates the Key of C Major

To use the illustration above, you must understand the numbering system. Look above and notice the number under the C. You will note the number (1) and also the roman numeral (I). Each note of the major key has a number to represent it. The C =1 or I, the D = 2 or ii, the E =3 or iii, the F = 4 or IV, the G = 5 or V, the A = 6 or vi and the B = 7 or vii. 

You can use the lower illustration to play a number of different progressions. I would like to explain the blues progressions !, IV, V, which is one of the most popular used. In the key of C the chords would be C, F and G. Look below at the 1, 4 and 5 chords. The 1, 4 and 5 guitar chords are the C, F and G. Roman numerals are usually illustrated to show each note of a particular major key. It would be a good idea to become familiar with this technique. The small letters, (ii, iii, vi) represent the minor chords. Look below at the Dm, Em and Am guitar chords.

C	Dm7	Em	F	G7	Am	B dim	C
1	2	3	4	5	6	7
I	ii	iii	IV	V	vi	vii
Tonic	Supertonic	Mediant	Subdominant	Dominant	Submediant	Leading tone

 

Here are some chord progression units in Major Keys, (Chords are Triads).
{ I     V     I     V} { I    IV     I    IV} { I    IV    V     V} { I    IV    V    IV} C G C G C F C F C F G G C F G F	You can play these progressions in every major key. The key of C has been illustrated, but play them in other keys.	{ I     V      IV      I} { I     V      IV     V}   C G F C C G F G

 

Here are some chord progression units in Major Keys, (Chords are Triads).
{ I     ii     I     ii} { I    ii     iii     I} { I    ii     iii    ii} { I    ii     iii    IV} C Dm C Dm C Dm Em C C Dm Em Dm C Dm Em F	You can play these guitar progressions in every major key. The key of C has been illustrated, but you can convert all of these chords to other keys.	{ I      ii     iii      V} { I      ii     iii     vi} { I      ii     IV       I} { I      ii     V        I} C Dm Em G C Dm Em Am C Dm F C C Dm G C

 

The progression below is a blues progression using the following chords.   I   IV   V    I Look to the left and find those chords. You should have noticed that the roman numerals above, represent the C, F and G chords. So to play this progression, you could strum each of those chords.

Major Chord Formulas (Major)         1, 3, 5 (Major 7)      1, 3, 5, 7 (Major 9)      1, 3, 5, 7, 9 (Major 11)    1, 3, 5, 7, 9, 11

(9)    = 2 (11)   = 4 (13)   = 6

 

Minor Chord Formulas (minor)        1, b3, 5 (minor 7)     1, b3, 5, b7) (minor 9)     1, b3, 5, b7, 9) (minor 11)   1, b3, 5, b7, 9, 11)

seventh------------1, 3, 5, b7 ninth---------------1, 3, 5, b7, 9 eleventh-----------1, 3, 5, b7, 9, 11 thirteenth---------1, 3, 5, b7, 9, 13 diminished--------1, b3, b5 full diminished----1, b3, b5, bb7 half diminished---1, b3, b5, b7

 

Assignments: Play the root 6 and root 5 bar chords. Use the uppermost table to play a 1, 4, 5  progression using the root 6 and root 5 bar chords. This progression would use the C, F and G chords. Start at the 8th fret, root 6 or E type for the C. Use the root 5 or A type for the F and G chords, 8th and 10th frets A string. Record these chords on cassette and play the Am pentatonic root fret and the next position starting on the C note 8th fret. Good Luck, From the Jam Room

 

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