Want to play some smokin’ hot blues chord progression that is easy to learn and play? Then this video is just right for you.
This is a very interesting blues guitar lesson by famous guitar tutor Nick Minnion (UK) who teaches you some basic Texas Blues Guitar style on an Acoustic Guitar.
There are just 3 chords in this lesson, which are E7, A7, a and B7. They are known as Dominant 7th Chords and also denoted as E Dom 7th, A Dom 7th, and B Dom 7th.
Dominant 7th Chords are derived from a Major scale by adding a flatted 7th (denoted as b7).
Confused? Don’t panic! I am going to explain how to derive these 3 chords – in this post.
So first let us learn how to derive a Major Scale.
The formula for building a Major Scale is Whole Step-Whole Step-Half Step- Whole Step -Whole Step -Whole Step-Half Step Or also denoted as W-W-H-W-W-W-H
What are Whole Steps and Half Steps?
Whole and Half Steps are nothing but musical intervals.
- A Whole Step is one fret apart (e.g. 1st to 3rd Fret or 3rd to 5th and so on) and
- A Half Step is the next immediate fret (e.g. 2 to 3, 3 to 4, 8 to 9 and so on)
So we can say that the interval between 1st to 3rd fret on the guitar is a Whole Step (a.k.a the Whole Tone) and the interval between 1st to 2nd fret is a Half Step (a.k.a. Semi-Tone)
Now I am sure now you understood what Whole and Half Steps are.
Deriving an E Major Scale
Now let’s apply the Major Scale formula that we discussed earlier to derive E Major scale.
Since we are deriving E Major Scale we need to start from the note E (For convenience you can use the E Note on the 4th string which is on the 2nd fret).
And we got the E Major Scale notes as E F# G# A B C# D# E (W-W-H-W-W-W-H).
E – F# => Whole Step
F# – G# => Whole Step
G# – A => Half Step
A – B => Whole Step
B – C# => Whole Step
C# – D# => Whole Step
D# – E = > Half Step
You can test it out for yourself and see whether the notes are correct as per the formula. Now I am sure you can easily derive A Major and B Major Scales like a charm.
A and B Major Scales
So the A Major Scale Notes are A B C# D E F# G# A
And B Major Scale Notes are B C# D# E F# G# A# B
Major Chord Formula
Formula for building a Major Chord is 1-3-5, which means you have to play the 1st, 3rd and 5th notes of the Major Scale together to get a Major Chord.
So the notes for E Major Chord will be E G# and B
Dominant 7th Chord formula
Similarly, the formula for building Dominant 7th Chords is 1-3-5-b7. (b7 is Flatted 7th note which means you have to lower the 7th note by a half step)
E7, A7 and B7 Chord Notes
By applying the above formula, you can derive the notes for E Dominant 7th as E G# B and D
And A7 (or A Dominant 7th) notes as A C# E G
And B7 (or B Dominant 7th) notes as B D# F# A
Now wouldn’t you think Nick’s lesson will make more sense and digest easily?
Please let me know your queries as comments!