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| == Rules for finding other usable chord types == | | == Rules for finding other usable chord types == |
| | {{see also| Dinner party rules}} |
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| In addition to the types of basic chord, one can derive other types of usable chords through a set of rules known as the "Dinner Party Rules"<ref>[https://www.youtube.com/watch?v=A355E0MKw7A Quartertone Harmony - The Truth About Quartertone Chords SD 480p]</ref>... | | In addition to the types of basic chord, one can derive other types of usable chords through the Dinner Party Rules, which were first compiled by a YouTuber going by the username Quartertone Harmony. |
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| * Every chord must be comprised of a chain of "friends" in which each note is a "friend" to every other note; a "friend" is defined here as a note separated by either a major third, a minor third, a neutral third, an inframinor third, or an ultramajor second.
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| * No note can have an "enemy"; an "enemy" is defined here as another note in the chord separated by either an ultraprime, an inframinor second, an infraoctave, or an ultramajor seventh, with the intervals of an ultramajor third, an inframinor sixth, a paraminor fourth and a paramajor fifth also making this list in the majority of cases.
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| * No crowding; specifically, no note can have more than one other note closer than a major second.
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| Once these rules are taken into consideration, finding usable chords and chord progressions is considerably easier.
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| <todo>
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| == References == | | == References == |