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! Family |Minor 6th | Name(s) || Notes R m3 P5 M6 || Spelling Xm{{6}} || R || m2 || M2 || m3 || M3 || P4 || tt || P5 || m6 || M6 || m7 || M7
! Family |Half Diminished | Name(s) || Notes R m3 d5 m7 || Spelling X{{hdim}}<br>X{{hdim}}{{7}}<br>Xm{{7}}{{b}}5<br>Xm{{7}}-5 || R || m2 || M2 || m3 || M3 || P4 || tt d5 || P5 || m6 || M6 || m7 || M7
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{{Top-Level Crumbs|3}} {{Reference Crumbs|9}} Chords are referred to by full (or "spoken") names as well as symbolic representations. For example, "C Major" is the spoken name for (C E G), while the symbolic name is simply "C". Symbolic chord notation typically take the following form:
{|class="wikitable"
| Root Note || quality (m, dim/{{dim}}, aug/+) || number indicating extension (6,7,9,11,13) || modifier (add/sus 2,4,6,9,11,13Interval #) || note modifier (+/-/{{s}}/{{b}} Interval #) || inversion (/Bass Note)
|}
* If the chord omits the 3rd and includes a 2nd or 4th in its place, it is considered suspended. This is indicated with "sus" and then either "2" or "4" depending on whether the chord has the 2nd or 4th.
* If the chord includes a note outside of the basic triad but does not include a 7th, this is indicated with "add" then the scale degree of the added note. This is typically the 2nd/9th - "add9".
* If the chord has a "/" followed by a note name at the end, this indicates an inversion, using the specified note as the bass note. Inversions can also be written by indicating the intervals of the notes above the bass note (C/E = E{{6}}<sub>3</sub>); however, this notation is rarely used in modern writing.
* Sometimes a power chord will be written as "Root5" (ex. G5). This technically isn't even a chord, but chord charts and chord symbols often write it in place of chords.
This is enough to specify most chords; however, it cannot represent a number of chords typically found in Jazz. Additional symbols are used to ''alter'' the chord after its basic structure is established. These take the form of {{s}}/+ or {{b}}/- then a number. The number indicates the member note of the chord by its interval against the root. "{{s}}" or "+" indicates to sharp that note a half-step, while "{{b}}" or "-" indicates to flatten flat the note by a half-step. (Jazz typically favors using "+" and "-" over "{{s}}" and "{{b}}", but their meaning is identical.) For example, Cm{{7}}{{b}}5 (or Cm{{7}}-5 means to take Cm{{7}}, which consists of (R - m3 - P5 - m7 ) and flatten flat the P5 to a d5, giving us (R - m3 - d5 - m7).
If the note was not already part of the indicated chord, this means to add that note into the chord. Our "baseline" version of the note is the one from the major scale (R M2 M3 P4 P5 M6 M7), but we are only really adding 9ths (2nds), 11ths (4ths), and 13ths (6ths) - the other notes are guaranteed to already be part of the chord. So our baselines are M2, P4, and M6. For example, C{{7}}{{b}}9 indicates the C{{7}} (R - M3 - P5 - m7) but adds a flattened flatted M9 (m2) into the chord (R - M3 - P5 - m7 - m9).
In addition to representing chords that could not otherwise by indicated, this ''chord alteration notation'' allows us to represent known chords in perhaps less ambiguous or more easily communicated symbols. For example, {{hdim}} is not a standard keyboard character, but C{{hdim}}{{7}} can be written as Cm{{7}}{{b}}5.
|-
|rowspan="4"|Triads
| Major || R M3 P5 || X || o R || || || || o M3 || || || o P5 || || || ||
|-
| Minor || R m3 P5 || Xm || o R || || || o m3 || || || || o P5 || || || ||
|-
| Augmented || R M3 A5 || X+<br>Xaug || o R || || || || o M3 || || || || o A5 || || ||
|-
| Diminished || R m3 d5 || X{{dim}}<br>Xdim<br>Xm-5<br>Xm{{b}}5 || o R || || || o m3 || || || o d5 || || || || |||-! Family || Name(s) || Notes || Spelling || R || m2 || M2 || m3 || M3 || P4 || tt || P5 || m6 || M6 || m7 || M7
|-
|rowspan="2"|Suspensions
| Suspended 2nd || R M2 P5 || Xsus2 || o R || || o M2 || || || || || o P5 || || || ||
|-
| Suspended 4th || R M4 P5 || Xsus4 || o R || || || || || o P4 || || o P5 || || || || |-! Family || Name(s) || Notes || Spelling || R || m2 || M2 || m3 || M3 || P4 || tt || P5 || m6 || M6 || m7 || M7
|-
|rowspan="2"|Sixths
| Major 6th || R M3 P5 M6 || X{{6}} || o R || || || || o M3 || || || o P5 || || o || || |-| Minor 6th || R m3 P5 M6 || Xm{{6}} || o || || || o || || || || o || || o || ||
|-
|-
|rowspan="6"| Sevenths
| Dominant 7th || R M3 P5 m7 || X{{7}} || o R || || || || o M3 || || || o P5 || || || o || |-| Minor 7th || R m3 P5 m7 || Xm{{7}} || o || || || o || || || || o || || || o ||
|-
| Major Minor 7th || R M3 m3 P5 m7 || Xmaj{{7}}<br>X{{maj}}Xm{{7}} || o R || || || m3 || o || || || o P5 || || || m7 || o
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| Minor/Major 7th || R m3 M3 P5 M7 m7 || Xm maj{{7}}<br>Xm{{maj}}{{7}}<br>Xmaj{{7}}{{b}}3<br>X{{maj}}{{7}}{{b}}3 || o R || || || o || M3 || || || o P5 || || || || o M7
|-
| Fully Diminished Minor/Major 7th || R m3 d5 d7 P5 M7 || XXm maj{{7}}<br>Xm{{dimmaj}}{{7}}<br>XdimXmaj{{7}} {{b}}3<br>X{{maj}}{{7}}{{b}}3 || o R || || || o m3 || || || o || P5 || || o || || M7
|-
| Half Fully Diminished || R m3 d5 m7 d7 || X{{hdimdim}}<br>X{{hdim}}{{7}}<br>Xm{{7}}{{b}}5<br>XmXdim{{7}}-5 || o R || || || o m3 || || || o d5 || || || d7 || o ||
|-
|-
|rowspan="8"| Ninths
| Dominant 9th || R M3 P5 m7 M9 || X{{9}} || o R || || o M9 || || o M3 || || || o P5 || || || o m7 ||
|-
| Minor 9th || R m3 P5 m7 M9 || Xm{{9}} || o R || || o M9 || o m3 || || || || o P5 || || || o m7 ||
|-
| Dominant Minor 9th || R M3 P5 m7 m9 || X{{7}}{{b}}9<br>X{{7}}-9 || o R || o m9 || || || o M3 || || || o P5 || || || o m7 ||
|-
| Major 9th || R M3 P5 M7 M9|| Xmaj{{9}}<br>X{{maj}}{{9}} || o R || || M9 || || o M3 || || || o P5 || || || || oM7
|-
| Augmented 9th <br>(Hendrix Chord) || R M3 P5 m7 A9 || X{{7}}+9<br>X{{7}}{{s}}9 || o R || || || o A9 || o M3 || || || o P5 || || || o m7 ||
|-
| 6/9 || R M3 P5 M6 M9 || X{{9}}{{b}}7<br>X{{9}}-7 || o R || || o M9 || || o M3 || || || o P5 || || o M6 || ||
|-
| Major Add 9 || R M3 P5 M9 || X add9 || o R || || o M9 || || o M3 || || || o P5 || || || ||
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| Minor Add 9 || R m3 P5 M9 || Xm add9 || o R || || o M9 || o m3 || || || || o P5 || || || |||-! Family || Name(s) || Notes || Spelling || R || m2 || M2 || m3 || M3 || P4 || tt || P5 || m6 || M6 || m7 || M7
|-
|rowspan="7"| Elevenths
| Diatonic 11th || R [M3] P5 M7 M9 P11 || Xmaj{{9}}sus4<br>X{{maj}}{{9}}sus4 || o R || || o M9 || || || o P11 || || o P5 || || || || oM7
|-
| Diatonic 11th (no 5th) || R [M3] [P5] M7 M9 P11 || Ydim/X<br>Y{{dim}}/X<br>''where Y = {{b}}X'' || o R || || o M9 || || || P11 || o || || || || || oM7
|-
| Dominant 11th || R [M3] P5 m7 M9 P11 || X{{11}} || o R || || o M9 || || || o P11 || || o P5 || || || o m7 ||
|-
| Dominant {{s}}11th<br>(Jazz 11th) || R M3 P5 m7 M9 A11 || X{{9}}+11<br>X{{9}}{{s}}11 || o R || || o M9 || || o M3 || || o A11 || o P5 || || || o m7 ||
|-
| Dominant {{s}}11th<br>(Jazz 11th) (no 5th) || R M3 [P5] m7 M9 A11 || X{{9}}{{b}}5<br>X{{9}}-5 || o R || || o M9 || || o M3 || o || A11 || || || || o m7 ||
|-
| Minor 11th || R m3 P5 m7 M9 P11 || Xm{{11}} || o R || || o M9 || o m3 || || o P11 || || o P5 || || || o m7 ||
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| Major 11th || R M3 P5 M7 M9 A11 || Xmaj{{11}}<br>X{{maj}}{{11}} || o R || || o M9 || || o M3 || || o A11 || o P5 || || || || o|-! Family || Name(s) || Notes || Spelling || R || m2 || M2 || m3 || M3 || P4 || tt || P5 || m6 || M6 || m7 || M7
|-
|rowspan="3"|Thirteenths
| Dominant 13th || R M3 P5 m7 M9 [P11] M13 || X{{13}} || o R || || o M9 || || o M3 || || || o P5 || || o M13 || o m7 ||
|-
| Minor 13th || R m3 P5 m7 M9 P11 M13 || Xm{{13}} || o R || || o M9 || o m3 || || o P11 || || o P5 || || o M13 || o m7 ||
|-
| Major 13th || R M3 P5 M7 M9 [P11] M13|| Xmaj{{13}}<br>X{{maj}}{{13}} || o R || || o M9 || || o M3 || || || o P5 || || o M13 || || oM7
|}
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{{Reference Crumbs|9}}
[[Category:Reference]]
[[Category:Chords]]
[[Category:Notation]]