Understanding The ProgressionTwelve bar blues is generally a progression with three chords the first, fourth and fifth chords ill explain this in greater detail latter. I will take it that you understand the basics behind sheet music layout. The progression is as follows bear in mind that a bar is four beats and in the diagram below one number represents one bar: Four bars of the first chord, two bars of the fourth chord, two bars of the first chord, two of the fifth and two of the first.
That is traditionally the twelve bar blues chord progression, though I and most of the guitarists I play with substitute the last four bars of the fifth and first chords to the following: One bar of the fifth chord, one bar of the fourth chord and two bars of the first chord.
1 / 1 / 1 / 1 4 / 4 / 1 / 1 5 / 5 / 1 / 1
You're probably a bit confused if this is new to you but you should do some googleing and try to find some sheet music so you can visually see what I'm trying to explain. Now we know where the chords go I will talk about what chords to actually play.
1 / 1 / 1 / 1 4 / 4 / 1 / 1 5 / 4 / 1 / 1
First, Fourth and Fifth Chords ExplainedWhen you're playing any song you play in a key. Here is where the numbers comes in! Let's say you're playing in the key of E a common blues key. E chord will be not only the key you're playing in but also the first chord. Now the fourth chord will be the A chord and the fifth chord B. How did I get this? Let's see. Look at the row of letters bellow. These are all the natural notes in the musical alphabet. Natural notes are notes that aren't sharps of flats. Now the first chord from the left is E, the fourth from the left is A and the fifth from the left is B.
It is the same for any Key let's see another example. We will now imagine we are writing on a piece of paper to find out the chords within a key. Let's put C at the start and write down all the natural notes in the musical Alphabet. The first chord is C, the fourth is F and the fifth is G.
E F G A B C D
This can be applied to any key. I hope that isn't too hard to understand. Because now we are going to add the two parts together and if you're a bit stumped it should make since when we combine these parts.
C D E F G A B
Twelve Bar BluesLet's go back to the key of E. So we've just learnt that the first, fourth and fifth chords are E, A and B. Now we will see how these are added to the twelve bars. We would play the following: Four Bars of E, two Bars of A, two bars of E, two bars of B and two bars of E
Now give this a try for yourself.
E / E / E / E A / A / E / E B / B / E / E