How to play altered jazz guitar lines using a major triad
- By jazz-guitar-licks
- On 03/11/2016
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When you want to play altered jazz guitar lines over a dominant 7th chord, there is an easy and efficient option which consists of playing a major triad starting on the #11 of the chord on which you want to improvise. This way you highlight the b7, #11 and b9 and add tension to your playing.
Let's take an example with a II-V-I sequence in the key of C major. The progression is Dm7 | G7alt | CMaj7.
Lick analysis - I-V7alt-I sequence
The first line starts with a D minor ninth arpeggio (D-F-A-C-E) from the dorian mode. To build a minor ninth arpeggio, you just have to take the first, the minor third, the fifth and the minor seventh of any minor scale (The dorian mode as is the case here). Keep in mind that the Dorian mode is a minor type scale, this is the second mode of the major scale. It is built with a root (1), a second (2), a minor third (b3), a perfect fourth (4), a perfect fifth (5), a sixth (6) and a minor seventh (b3). This is surely the first choice when you want to improvise over a minor chord.
|D Dorian mode||D||E||F||G||A||B||C|
|Formula||1||2 (9)||b3||4 (11)||5||6 (13)||b7|
|D minor ninth arpeggio||D||E||F||X||A||X||C|
The four first notes of the second measure make up a descending Db major triad (Db-F-Ab). This triad is from the G altered scale. It starts on the #11 (Db) of G7. The altered scale is the seventh mode of the melodic minor scale. It is also known as "super locrian mode". It is generally used over dominant 7th chords (alt) when you want to add a sense of tension. Indeed, the altered scale contains all the altered notes that a scale can contain. Namely b9, #9, b13 and #11.
|G altered scale||G||Ab||Bb||B||Db||Eb||F|
|Formula||1||b9||#9||3||b5 (#11)||#5 (b13)||b7|
|Db major triad||X||Ab||X||X||Db||X||F|
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