Blues cadence

In music, the V–IV–I turnaround, or blues turnaround, is one of several cadential patterns traditionally found in the twelve-bar blues, and commonly found in rock and roll.

The cadence moves from the tonic to dominant, to subdominant, and back to the tonic. "In a blues in A, the turnaround will consist of the chords E⁷, D⁷, A⁷, E⁷ [V–IV–I–V]." V may be used in the last measure rather than I since, "nearly all blues tunes have more than one chorus (occurrence of the 12-bar progression), the turnaround (last four bars) usually ends on V, which makes us feel like we need to hear I again, thus bringing us around to the top (beginning) of the form again.".

The blues turnaround may be "dress[ed] up" by using V aug  Play  ("an uptown V⁷") instead of V⁷ Play , "adding a touch of jazzy sophistication." An important variation is the jazz influenced turnaround ii–V–I–V.

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