Thanks for that comprehensive reply :), my threadjack is over.

Hang on, is it 8ve that raises it by an octave or 8va? There's one for lowering isn't there? Which one is which?

So I can also consider it an Ab7#9 chord without the D? That'll make it easier to remember. If it makes it easier for you to remember :D, the 'Hendri...

By any chance was this Mickey Baker's Jazz Guitar? I found that book confusing.It might be more helpful when voicing (might just be more confusing) to...