Blues Chord Progression

The typical chord progression in blues is the 12-bar blues, where the first four bars are in I, the following two bars in IV, and then again in I. The last four bars include a dominant degree and return to I; in traditional blues, V-V-I-I or V-IV-I-I; in jazz, II-V-I-I. In blues, all chords are of the dom7 type; jazz uses other chord types as well.

Example 27
example 27

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