Dominant 7b5 chords are common in jazz music and are most often used as tritone substitution or as leading tone chords from the melodic minor scale. There are 9 dominant 7b5 chords and they can be built from either the whole tone and diminished scales, as well as the 4th and 7th modes of the melodic minor scale. I cover all the chords and scales and how to use them in your music.
The 7b5#9 chord is one of the four 7alt chords in music, typically built from the altered scale. Altered seventh chords, in the strictest sense, are dominant 7th chords that have both an altered 5th and an altered 9th. I cover the notes and intervals for the 7♭5#9 chord, how to use the chord and show 3 closed voicings and 8 open for the 7♭5#9 chord.
I cover the 7#11 and 7♭5♭9 guitar chords in detail including the intervals in the chords, the scales that build the chords and the notes for the chords in the keys of G and Db. I also have 6 closed voicings for the chords and another 10 open chords for G & D♭.
The whole tone scale is not just for augmented chords. Dominant chords with a flatted fifth note can be built from the whole tone scale. And you can build more 7b5 chords than you cam augmented chords. I cover all the chords that are built with this 6-note scale and I have closed guitar chord voicings for all of them. I'll even throw in some choice open chords.