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| | MUS 212 Popular Chord Symbols v. Roman Numerals |
 | | For diminished structures extending more than a seventh, it is preferable to indicate only the structure of the diminished seventh chord, in terms of half- or fully-diminished, then, use the designation "add 9," "add 11," "add 13," etc. For example, the symbol Cdim9 means a fully diminished seventh chord with an added major ninth. |
 | | Bottom line: The 9th and 13th are diatonic to the key (major or minor) unless an indication is given (via flat or sharp) that these pitches are to be altered. |
 | | Their structure, however, would be the typical major-minor seventh chord as the basis, and all extended notes (9, 11, 13) would be determined by the key signature. |
| spider.georgetowncollege.edu /music/burnette/Mus212/212popular.htm (1579 words) |
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