Musical Composition, Theory and Songwriting/chords


why are chords III and VII used in specific harmonic progressions only? And where in cadences would they be used?

Hello  Garren and thank you for contacting me through

Chords iii and vi are most often used to extend a progression and usually make no significant changes. Chords V and vii either move toward the tonic, or start a new progression whichs moves toward a new tone center. Here are a couple helpful charts:

Thanks for the interest,

D C DowDell
Professor of Music
A Passion for Jazz!
studio: (619) 855-2069

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D C DowDell


D C DowDell will answer questions about Jazz improvisation, composition, chord voicing, scales and modes, practice techniques and ear training. Professor DowDell also enjoys discussions on Jazz musicology and the evolution of style.

D C DowDell is a professional Jazz pianist/composer who currently teaches online Jazz studies at A Passion for Jazz!. Professor DowDell has been teaching music for over 30 years at 2 major universities, several community colleges as well as accepting students for private study.


American Federation of Musicians
National Music Teachers Association
International Association of Jazz Educators

Bachelors of Music Education from UCLA
Masters of Music Composition from UNT

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