![]() G7 b9īy now, you have understood that a 7 b9 chord can be replaced by a diminished 7th chord (chord substitution technique) starting on the major third (3), the fifth (5), the minor seventh ( b7) or the flat ninth ( b9) of this 7 b9.Įxample in a C major II-V-I progression where the V7 is extended with a b9 giving a V7 b9. folks have a peculiar interest in normalization. So G7 b9 (except the root) has the same notes as A bº, Bº, Dº or Fº. Morgan is a freelance writer in New York and the author of Born in Bedlam, a memoir. Its relative minor is E-flat minor (or enharmonically D-sharp minor ). Dominant 7 b9 contains the same notes as a diminished 7th chord built on any of the chord tones including the flat 9 but without the root. G-flat major (or the key of G-flat) is a major scale based on G, consisting of the pitches G, A, B, C, D, E, and F. By taking a dominant 7 (Example with G7 : G, B,D and F) and adding the flattened ninth (A b for G7), you built a 7 b9 chord. This is just a flattened minor 3rd (AKA a Major 2nd). The dominant 7 b9 chord functions as a dominant (V7) implying in its upper structure the tones of a symmetrical diminished chord. (Notice the Augmented 7th chord uses an interval of a Diminished 3rd.
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