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Enharmonic Modulation

Greg Robin (418) · [archive]
Style: Theory/Reference · Level: Intermediate · Tempo: 120
Pages: 1

Diminished 7th chords are essential modulatory devices. They can go to many different keys by enharmonic modulation. For instance, take a c eb gb. Respell it A C Eb Bbb. Now you can modulate to Bb major or minor. In the first chord you would modulate to Bb major or minor. You can keep re spelling for the rest of the notes. This is possible because fully diminished 7th chords are all minor 3rds thus any note can be the root if you spell or respell in minor thirds. The diminished chord functions as the vii chord. In minor it is built on #7 scale degree. If you lack chord progression theory give me an e mail. Later