Learning to play blues guitar is awesome, since it's one of the easiest genres to master on the guitar. Because of this, and the fact that playing the blues is fun and expressive, many beginner-intermediate guitarists choose to learn the blues. And yes, it is possible at an early stage already.
To start playing the blues, one of the most fundamental things you'll need to know is what a 12-bar blues progression actually is. This short blues guitar lesson will introduce you to the 12 bar blues form, the chords you'll need to play, and the order you'll be playing the chords in.
First off, let's have a look at the chords you'll play with a 12 bar blues progression. You may, or may not be familiar with the popular I-IV-V chord progression. This dictates the chords you'll be playing in any given key. The way it works the following.
I-IV-V Blues Chord Progression
You take any given key and count out the first, fourth and fifth degree of the major scale. Some key will include sharps and flats, but for example the key of E only includes "normal" chords without any sharps of flats. So if we want to count the I-IV-V progression in this key, we get the following:
E major - A major - B major
since the major scale in the key of E goes: E-f-g-A-B-c-d. The first degree of the scale is E major, the fourth is A major, and the fifth is B major. If you are into music theory, you will refer to the I chord as the tonic, the IV chord as the subdominant, and the V chord as the dominant.
So now that we got the basic chord progression out of the way, lets have a look at the 12 bar blues guitar progression.
12 Bar Blues Form
From the title of this form, you can already tell that it is made up of 12 bars, or 12 measures of music. You play the same chord in each measure, as dictated by the 12 bar blues progression:
I - I - I - I - IV - IV - I - I - V - IV - I - I/V
Going back to our example in the key of E, where we already know the I - IV - V chords, you would get the following progression:
E - E - E - E - A - A - E - E - B - A - E - E(or B )
It helps to imagine the 12 bar blues in a series of 3 times 4 measures.
- The first 4 bars start things up with the relaxed I chord.
- The second 4 bars start off with 2 bars of the IV chord, which starts building tension, then resolves back to the I chord for 2 bars.
- The last 4 bars of the progression, you increase tension by playing the V chord, and gradually decrease it and eventually resolve the tension by playing the IV chord in the 10th bar, than the I chord for the last 2 bars, adding the V chord at the end as the turnaround.
An important element of the 12 bar blues is the turnaround, after which you start the entire progression all over again. The V chord is usually the turnaround chord, which again, creates a sense of tension, before turning around to the I chord, where you start the whole thing over. Here is the entire progression tabbed out, note that I uses B7 instead of B major, since it's easier to play, and blues uses lots of 7th chords anyways:
So basically this is the 12 bar blues guitar progression, it's fairly simple, since it only uses 3 chords in a set progression, feel free to try it out in other key as well.