![]() Minor blues also has a different turnaroundbVI7V7-im7-V7 (in the key of Gm, that would be Eb7D7Gm7D7)which can be heard in B.B. In the minor variation of the 12-bar blues, minor 7th chords are substituted for the I7 and IV7 chords. ![]() ![]() The final bars of the 12-bar form constitute the turnaround, named as such because it sends you back to the beginning of the form for another chorus. Unlike most tonal music, which uses dominant 7th chords (135b7) as functional harmony, the blues uses them to add color, most commonly in a 12-bar form ( FIGURE 1 ).įIGURE 1 (Image credit: Future) There are variations within the form, the most common being the quick change, where the IV7 chord sits in for the I7 in measure 2. THE 12-BAR FORM The primary harmonic structure of the blues is the I-IV-V progression, which derived from church music of the South. Piano Runs And Fills Create Them Series Of Alternating. ![]()
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