Altered Dominant Chords
A lot of the color in jazz comes from the sounds of the various altered dominant chords. This lesson will present numerous voicings for altered dominant chords.
What makes a dominant chord altered is when the 5th or 9th degree of the chord are raised or lowered by one half step.
There are many different ways of notating altered chords, but you may see them written out as C7#5, C7+, C7aug, C7b9, C7#5b9, etc.
Below I will notate some useful chord voicings to know with the #5, b5, b9, and #9 altered tones.
Note that the voicings below do not contain all the chord tones, but a combination of them. When making your own voicings, it is important to pick and choose what tones you use in order to create a chord with the sound you desire.
C7b5: The dominant b5 chord contains the 1-3-b5-b7. For example C7b5 contains C-E-Gb-Bb.
C7#5: The dominant #5 chord contains the 1-3-#5-b7. For example C7#5 contains C-E-G#-Bb.
C7b9: The dominant b9 chord contains the 1-3-5-b7-b9. For example C7b9 contains C-E-G-Bb-Db.
C7#9: The dominant #9 chord contains the 1-3-5-b7-#9. For example C7#9 contains C-E-G-Bb-D#.