n comparing themarabi harmonic structure and its seminalposition in vernacular jazz improvisatory practice in South Africa to that of the AfricanAmerican blues in its relationship to jazz, Ballantine explained its basis ‘on a cyclicpattern’ as ‘stretch[ing] over four measures, with one measure for each of the followingchords: I – IV - I 6/4 - V’ (Ballantine 1993:26)

However, in the case of marabi, the three chords were usuallyplayed in short two or four bar phrases, and were most commonly voiced as triads in thesequence I-IV-I-V. Due to the preference for diatonic tonality in marabi, few chord extensiontones were used other than the occasional addition of a major 6th to chord IV and the use ofthe dominant 7th on chord V. The resulting progression is the iconic I-IV6-Ic-V7 whichbecame the harmonic foundation of the South African sound.

The three-chord harmonic system ofmarabi is derived from the harmonic root movementof the European diatonic major scale

The underlying harmonic structure inmarabitypically uses the major (I), the subdominant major (IV), and the dominant (V) in aperpetually repeating structure suited to dance. In its advanced form inmbaqanga(African jazz), the simple three-chordmarabi harmonic structure was consolidated in alengthened cyclic form in which the (V) root was preceded with the tonic major in itssecond inversion (I 6/4 ). In comparing themarabi harmonic structure and its seminalposition in vernacular jazz improvisatory practice in South Africa to that of the AfricanAmerican blues in its relationship to jazz, Ballantine explained its basis ‘on a cyclicpattern’ as ‘stretch[ing] over four measures, with one measure for each of the followingchords: I – IV - I 6/4 - V’ (Ballantine 1993:26)

The underlying harmonic structure inmarabitypically uses the major (I), the subdominant major (IV), and the dominant (V) in aperpetually repeating structure suited to dance. In its advanced form inmbaqanga(African jazz), the simple three-chordmarabi harmonic structure was consolidated in alengthened cyclic form in which the (V) root was preceded with the tonic major in itssecond inversion (I 6/4 ). In comparing themarabi harmonic structure and its seminalposition in vernacular jazz improvisatory practice in South Africa to that of the AfricanAmerican blues in its relationship to jazz, Ballantine explained its basis ‘on a cyclicpattern’ as ‘stretch[ing] over four measures, with one measure for each of the followingchords: I – IV - I 6/4 - V’ (Ballantine 1993:26)

However, in the case of marabi,the threechords were usually played in short two or four bar phrases, and were most commonly voiced as triads in the sequence I-IV-I-V. Due to the preference for diatonic tonality in marabi, few chord extension tones were used other than the occasional addition of a major6thto chord IV and the use of the dominant 7thon chord V. The resulting progression is the iconic I-IV6-Ic-V7which became the harmonic foundation of the South African sound.