Soloing with Triads (8-Note Dominant) - Page 3
by Laurence Mollerup
We have the G diminished 7th chord, which is a single diminished seventh chord with four possible inversions (G o7 is Bb o7 is C# o7 is E o7)
We also have the G# diminished 7th chord, which is to say another diminished seventh chord with four possible inversions (G# o7 is B o7 is D o7 is F o7).
Playing either of the diminished 7th chords sounds great over G7 (b9). But lets focus on the triad concept again on the next page.