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 x3h2
(@x3h2)
Active Member
Joined: 19 years ago
Posts: 3
Topic starter  

Hey this is my first post. been playing guitar a year now.

I have a qestion regarding intervals.

Before i thought intervals were as follows

I II III IV V VI VII
A B C D E F G

But after reading a few lessons i was confused because the D Major chord has a root a III and a V note in it and is made up of D F# and A

Is the interval between any two notes linked to the major scale?

Is a 4th of A actually E and not D as I origionally thought?

My wording may be confusing but I would like any insight regardng intervals you could offer. Thanks a lot.


   
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(@noteboat)
Illustrious Member
Joined: 21 years ago
Posts: 4921
 

A couple things...

First, just for clarity's sake... Roman numerals usually indicate chords - intervals and notes are shown in Arabic numerals (1, 2, 3, etc.)

Intervals come from the major scale. In the key of A, you'd have:

A-B-C#-D-E-F#-G#-A
1-2-3--4-5-6--7--8

All major chords are the 1-3-5 of the major scale, and they use the major scale of the root note. In D, you've got D-E-F#-G-A-B-C#-D, so 1-3-5 is D-F#-A.

You were right, the fourth of A is D. E is the fifth. You include the root note (which counts as 1) so you have A-B-C#-D to get to the fourth.

Guitar teacher offering lessons in Plainfield IL


   
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 x3h2
(@x3h2)
Active Member
Joined: 19 years ago
Posts: 3
Topic starter  

Thanks a lot for clarifying. Everything makes much more sense now.

When refering to intervals then everyone assumes it is in relationship to the major scale?


   
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(@alex_)
Honorable Member
Joined: 21 years ago
Posts: 608
 

*hmms and hars*

I II III IV V VI VII etc

are not interval names, there chords of a scale...

C major = I
G major = V
A minor = VI

etc, they label chords in a key

***

Intervals are the spaces between the notes in these chords, lets disect a C major chord

C major = C E G.

an interval is the distance between TWO NOTES, so...

C-E ... is a major third interval
E-G ... is a minor third interval
C-G ... is a Perfect fifth interval

right, your probably confused so ill put it in other terms..

major third interval = 4 semitones
minor third interval = 3 semitones
perfect fifth interval = 7 semitones..

those are the basic intervals, they get a lot more complicated than that.. but you need to learn intervals AT THE SAME TIME AS, learning how to construct chords..

a major chord is a combination of a major 3rd interval and a minor 3rd interval.. *randomly picks a note*.. F

ok so lets make F major..

F, right so, we need a major third interval starting on F, so its 4 semitones, so lets count..

F# G G# A ok so we have A.

notes so far are F AND A.. this is a major third interval, and to make it a major chord, we need a minor 3rd interval on A..

remmembering a minor third interval is 3 semitones..

A# B C... a C note.

so A and C is a minor third. lets stick them together so we have

F A C

now every major and minor chord needs a perfect fifth interval between the top note and bottom note and like i said thats 7 semitones, so if the distance between the lowest note (F) and the highest (C) is 7 semitones apart, we've done it right..

F# G G# A A# B C ... yep 8)

SO WE HAVE A..
F major chord, now try it with a few other notes, it might be helpful to look on a piano/keyboard to count up the notes. (every key is a semitone)


   
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(@noteboat)
Illustrious Member
Joined: 21 years ago
Posts: 4921
 

A minor = VI

It's common to see minor chords indicated by lower case, so A minor = vi in Alex's example.

Guitar teacher offering lessons in Plainfield IL


   
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(@psychonik)
Reputable Member
Joined: 21 years ago
Posts: 268
 

very well said alex. Intervals are the building blocks of music. experiment with them in melody and harmony, and you'll be writing intricate yet solid pieces in no time.


   
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