Tags: Genre, Music Genre, Topical Concept.
The 12-bar blues or blues changes is one of the most prominent chord progressions in popular music. The blues progression has a distinctive form in lyrics phrase chord structure and duration. In its most basic form it is predominantly based on the I-IV-V chords of a key.A 24-bar blues follows the same changes but each chord lasts for twice as many measures.The blues can be run in any key. Mastery of the blues and rhythm changes are critical elements for building a jazz repertoire.
