31: Introduction to Jazz Theory
-
- 31.3: Altered Dominant Seventh Chords
- Typically, a dominant seventh chord is considered altered if either or both the 5th or 9th are chromatically raised or lowered. (“G7alt” might mean a G7 with both an altered 5th and 9th, but is vague in that it doesn’t specify how the 5th and 9th are chromatically altered.)
-
- 31.9: Scales
- In this section on scales, our primary concern will be understanding how scales relate to corresponding chords in order to allow one to improvise a jazz solo. Similarly, understanding chord-scale relationships can allow one to write chordal solos (like a sax soli or shout chorus in a jazz ensemble piece) where non-chord tones come from the corresponding scale.
-
- 31.10: How to Determine Chord-Scale Relationships
- To discover a chord-scale relationship for almost any chord, write all of the notes of the chord (including upper extensions and altered notes), then fill in the thirds with the most logical choices, avoiding augmented seconds and consecutive half steps.