Rafa,

Google translator did a great job of translating Spanish to English!

Many theory books agree with Joe Pass and treat a diminished 7th chord as a dominant 7th with a flattened 9th that does not have the root present. For example, in the key of C, Bdim7 (B-D-F-Ab) is often easiest thought of G7b9 (G-B-D-F-Ab) without the G.

Regards,
Noel


MY SONGS...
Audiophile BIAB 2025