ویدیو توضیح بلوز ۱۲ میزانی در گیتار

The most common form of the blues is a 12-bar pattern of chord changes. That is, a repeated twelve-bar chord progression. This is called “۱۲-Bar Blues”.You should remember a bar is the same as a measure. Most often in blues you will count 4 beats to each bar – ۴/۴ time.

In a blues song this 12-bar cycle gets repeated over and over through the course of the tune. A blues song might play through it 20 times. It will depend on the specific song.

The blues can be played in any key. In whatever key you are in, 12-bar blues uses the same basic sequence of I, IV, and V chords. It is most easily thought of as three 4-bar sections – the first 4, the middle 4, and the last 4 bars.

The first 4 bars just use the I chord – I, I, I, I.

The middle 4 bars go IV, IV, I, I.

And the last 4 bars go V, IV, I, V. Then you repeat the whole thing again.

To get the blues chord progression for the blues in A, we take the I, IV, and V chords from the key of A. That means A is I, D is IV, and E is V. Then, we plug those three chords into the corresponding places in the blues form. We end up with this set of chord changes:

The first step in learning to play the blues is getting comfortable with where the chords change. You need to memorize and completely internalize this sequence of chords. You can’t ever get lost wondering to yourself, “What chord is next?” With enough time and practice, you’ll just hear and feel what the next chord change is. In the beginning you may have to really concentrate on the changes.