KeySense Key Cards

F-flat locrian 7th chords

The Solution below shows the F-flat locrian mode 7th chords, (iø7, II7, iii7, iv7, V7, VI7, vii7) on a piano, with mp3 and midi audio.

The Lesson steps then explain the 7th chord construction from this mode, and how to name the quality of each chord based on note intervals.

For a quick summary of this topic, and to see the chord quality chart for this mode, have a look at Mode chord.

Keys in this mode
KeyCC#DbDD#EbEE#[Fb]FF#GbGG#AbAA#BbBB#Cb

Solution - 7 parts

1. F-flat locrian chord iø7

This step shows the tonic 7th chord of the F-flat locrian mode.

The F-flat locrian chord iø7 is the Fb half-dim7 chord, and contains the notes Fb, Abb, Cbb, and Ebb.

This tonic 7th chords root / starting note is the 1st note (or scale degree) of the F-flat locrian mode.

The roman numeral for number 1 is 'i', and is used to indicate this is the 1st chord in the mode. Just like a minor chord, the half-diminished 7th chord is constructed using a minor third interval, so the roman numeral is shown in lower case.

The half-diminished symbol 'ø' is placed after the roman numerals to indicate this is a half-diminished 7th chord.

F-flat locrian 7th chord 1 is F-flat half-diminished 7th

Chord names for F-flat locrian chord 1
Chord positionLinka/b/c/d notationFigured bass notation
Root positionFb half-diminished 7th chord in root positioniøaiø7
1st inversionFb half-diminished 7th chord in 1st inversioniøbiø65
2nd inversionFb half-diminished 7th chord in 2nd inversioniøciø43
3rd inversionFb half-diminished 7th chord in 3rd inversioniødiø2
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KeySense Key Cards

2. F-flat locrian chord II7

This step shows the supertonic 7th chord of the F-flat locrian mode.

The F-flat locrian chord II7 is the Gbb maj 7 chord, and contains the notes Gbb, Bbb, Dbb, and Fb.

This supertonic 7th chords root / starting note is the 2nd note (or scale degree) of the F-flat locrian mode.

The roman numeral for number 2 is 'II', and is used to indicate this is the 2nd chord in the mode. It is in upper case to denote that the chord is a major chord.

F-flat locrian 7th chord 2 is G-double-flat major 7th

Chord names for F-flat locrian chord 2
Chord positionLinka/b/c/d notationFigured bass notation
Root positionGbb major 7th chord in root positionIIaII7
1st inversionGbb major 7th chord in 1st inversionIIbII65
2nd inversionGbb major 7th chord in 2nd inversionIIcII43
3rd inversionGbb major 7th chord in 3rd inversionIIdII2
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3. F-flat locrian chord iii7

This step shows the mediant 7th chord of the F-flat locrian mode.

The F-flat locrian chord iii7 is the Abb min 7 chord, and contains the notes Abb, Cbb, Ebb, and Gbb.

This mediant 7th chords root / starting note is the 3rd note (or scale degree) of the F-flat locrian mode.

The roman numeral for number 3 is 'iii', and is used to indicate this is the 3rd chord in the mode. It is in lower case to denote that the chord is a minor chord.

F-flat locrian 7th chord 3 is A-double-flat minor 7th

Chord names for F-flat locrian chord 3
Chord positionLinka/b/c/d notationFigured bass notation
Root positionAbb minor 7th chord in root positioniiiaiii7
1st inversionAbb minor 7th chord in 1st inversioniiibiii65
2nd inversionAbb minor 7th chord in 2nd inversioniiiciii43
3rd inversionAbb minor 7th chord in 3rd inversioniiidiii2
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4. F-flat locrian chord iv7

This step shows the subdominant 7th chord of the F-flat locrian mode.

The F-flat locrian chord iv7 is the Bbb min 7 chord, and contains the notes Bbb, Dbb, Fb, and Abb.

This subdominant 7th chords root / starting note is the 4th note (or scale degree) of the F-flat locrian mode.

The roman numeral for number 4 is 'iv', and is used to indicate this is the 4th chord in the mode. It is in lower case to denote that the chord is a minor chord.

F-flat locrian 7th chord 4 is B-double-flat minor 7th

Chord names for F-flat locrian chord 4
Chord positionLinka/b/c/d notationFigured bass notation
Root positionBbb minor 7th chord in root positionivaiv7
1st inversionBbb minor 7th chord in 1st inversionivbiv65
2nd inversionBbb minor 7th chord in 2nd inversionivciv43
3rd inversionBbb minor 7th chord in 3rd inversionivdiv2
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5. F-flat locrian chord V7

This step shows the dominant 7th chord of the F-flat locrian mode.

The F-flat locrian chord V7 is the Cbb maj 7 chord, and contains the notes Cbb, Ebb, Gbb, and Bbb.

This dominant 7th chords root / starting note is the 5th note (or scale degree) of the F-flat locrian mode.

The roman numeral for number 5 is 'V', and is used to indicate this is the 5th chord in the mode. It is in upper case to denote that the chord is a major chord.

F-flat locrian 7th chord 5 is C-double-flat major 7th

Chord names for F-flat locrian chord 5
Chord positionLinka/b/c/d notationFigured bass notation
Root positionCbb major 7th chord in root positionVaV7
1st inversionCbb major 7th chord in 1st inversionVbV65
2nd inversionCbb major 7th chord in 2nd inversionVcV43
3rd inversionCbb major 7th chord in 3rd inversionVdV2
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6. F-flat locrian chord VI7

This step shows the submediant 7th chord of the F-flat locrian mode.

The F-flat locrian chord VI7 is the Dbb dom 7 chord, and contains the notes Dbb, Fb, Abb, and Cbb.

This submediant 7th chords root / starting note is the 6th note (or scale degree) of the F-flat locrian mode.

The roman numeral for number 6 is 'VI', and is used to indicate this is the 6th chord in the mode. Just like a major chord, the dominant 7th chord is constructed using a major third interval,so the roman numeral is shown in upper case.

F-flat locrian 7th chord 6 is D-double-flat dominant 7th

Chord names for F-flat locrian chord 6
Chord positionLinka/b/c/d notationFigured bass notation
Root positionDbb dominant 7th chord in root positionVIaVI7
1st inversionDbb dominant 7th chord in 1st inversionVIbVI65
2nd inversionDbb dominant 7th chord in 2nd inversionVIcVI43
3rd inversionDbb dominant 7th chord in 3rd inversionVIdVI2
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7. F-flat locrian chord vii7

This step shows the subtonic 7th chord of the F-flat locrian mode.

The F-flat locrian chord vii7 is the Ebb min 7 chord, and contains the notes Ebb, Gbb, Bbb, and Dbb.

This subtonic 7th chords root / starting note is the 7th note (or scale degree) of the F-flat locrian mode.

The roman numeral for number 7 is 'vii', and is used to indicate this is the 7th chord in the mode. It is in lower case to denote that the chord is a minor chord.

F-flat locrian 7th chord 7 is E-double-flat minor 7th

Chord names for F-flat locrian chord 7
Chord positionLinka/b/c/d notationFigured bass notation
Root positionEbb minor 7th chord in root positionviiavii7
1st inversionEbb minor 7th chord in 1st inversionviibvii65
2nd inversionEbb minor 7th chord in 2nd inversionviicvii43
3rd inversionEbb minor 7th chord in 3rd inversionviidvii2
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Lesson steps

1. Piano key note names

This step shows the white and black note names on a piano keyboard so that the note names are familiar for later steps, and to show that the note names start repeating themselves after 12 notes.

The white keys are named using the alphabetic letters A, B, C, D, E, F, and G, which is a pattern that repeats up the piano keyboard.

Every white or black key could have a flat(b) or sharp(#) accidental name, depending on how that note is used. In a later step, if sharp or flat notes are used, the exact accidental names will be chosen.

Sharp and flat note names

The audio files below play every note shown on the piano above, so middle C (marked with an orange line at the bottom) is the 2nd note heard.

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2. F-flat locrian mode notes

This step shows the mode note names that will be used to construct all 7th chords that harmonize with those mode notes.

The piano keyboard below contains the notes of the F-flat locrian mode.

Starting from the 1st mode note, each lesson step below will take each note in turn and construct a 7th chord using that note as the root / starting note of that chord.

The 7th chord will be built using only the notes of the mode we are interested in.

Identifying the 4 notes in the chord

7th chords are built using the 1st, 3rd, 5th, and 7th notes of a mode, so the first 7th chord below will constructed a chord using notes Fb, Abb, Cbb and Ebb.

F-flat locrian mode
No.12345678
NoteFbGbbAbbBbbCbbDbbEbbFb

The second 7th chord below will repeat this, but this time starting on the 2nd note, so its notes will be Gbb, Bbb, Dbb and Fb - ie. the 1st, 3rd, 5th and 7th positions relative to that 2nd root note.

This pattern is repeated for all 7 notes in the mode, resulting in 7 seventh chords.

F-flat locrian mode

Identifying the chord quality

Although the above method identifies each 7th chord notes from the mode used, it does not identify the complete chord name including its quality.

Should each 7th chord that we build be called diminished, half-diminished, minorminor-major, dominant, major, augmented, or augmented-major ?

Every 7th chord must have one of these quality names.

To decide the name the chord quality, each step below will use note intervals to calculate how many half-tones / semitones / piano keys between the root and the 3rd, 5th and 7th notes.).

Taken together, the combination of the 3rd, 5th and 7th note intervals will define the complete 7th chord quality name.

The steps below will show how this works for each 7th chord in turn, but in practice it might just be easier to memorize the triad quality table in the Mode chord summary for each mode type.

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3. 1st 7th chord in F-flat locrian mode

This step shows how to identify the notes and the name of a 7th chord whose root note is the 1st scale degree of the F-flat locrian mode.

Identifying the 4 notes in the chord

The table below shows the F-flat locrian mode, ordered to show the 1st note as the first column in the table.

To identify the 7th chord note names, use the 1st, 3rd, 5th and 7th columns / scale degrees, which are notes Fb, Abb, Cbb, and Ebb.

F-flat locrian mode from note #1
No.1234567
NoteFbGbbAbbBbbCbbDbbEbb

Identifying the chord quality

To identify the 7th chord quality that has these notes, begin by counting the number of half-tones / semitones between the root and each of the notes.

For the 3rd interval (note 2 on the diagram) the distance between Fb and Abb is 3 half-tones.

Now look at the complete Note interval table, and identify the note interval that has a distance of 3 half-tones (first column), and with an interval no. of 3 (last column).

The note interval name for the 3rd note / scale degree is therefore minor, also called m3 for short. More details of this interval are at Fb-min-3rd.

Repeating this for the 5th note / scale degree, the distance between Fb and Cbb is 6 half-tones, and the note interval name is diminished (d5). More details of this interval are at Fb-dim-5th.

Again the 7th note / scale degree, the distance between Fb and Ebb is 10 half-tones, and the note interval name is minor (m7). More details of this interval are at Fb-min-7th.

Finally, we have the name of the three note intervals of this 7th chord, and can now lookup the name of the 7th chord quality having these intervals.

Looking at the Seventh chord table, the name of the 7th chord quality having minor(m3), diminished(d5) and minor(m7) note intervals is half-diminished 7th.

And so the complete 7th chord Name prefixes the root note, Fb, onto this quality, giving us the Fb half-dim7 chord.

F-flat half-diminished 7th chord

Scale chord names using a,b and c notation

The chord symbol iø could be followed by the letter a to indicate that it is Fb half-diminished 7th chord in root position (ie not inverted) - F-flat locrian mode chord iøa.

Instead, iø could be followed by the letter b to indicate that it is Fb half-diminished 7th chord in 1st inversion - F-flat locrian mode chord iøb.

Letter c could be used to indicate that it is Fb half-diminished 7th chord in 2nd inversion - F-flat locrian mode chord iøc.

Finally, letter d could be used to indicate that it is Fb half-diminished 7th chord in 3rd inversion - F-flat locrian mode chord iød.

Scale chord names using figured bass notation

In place of the a-d symbols above, figured bass symbols could be used to indicate chord positions after iø:

So in this key, iø7 refers to the Fb half-diminished 7th chord in root position.

For 7th chord inversions, iø65 refers to the Fb half-diminished 7th chord in 1st inversion, iø43 refers to the Fb half-diminished 7th chord in 2nd inversion, and iø2 refers to the Fb half-diminished 7th chord in 3rd inversion.

The next scale chord

The next step will need to calculate the 7th chord whose root / starting note is next mode note.

To do this, the first column we used in this step, Fb, will be moved to the final column of the table.

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4. 2nd 7th chord in F-flat locrian mode

This step shows how to identify the notes and the name of a 7th chord whose root note is the 2nd scale degree of the F-flat locrian mode.

Identifying the 4 notes in the chord

The table below shows the F-flat locrian mode, ordered to show the 2nd note as the first column in the table.

To identify the 7th chord note names, use the 1st, 3rd, 5th and 7th columns / scale degrees, which are notes Gbb, Bbb, Dbb, and Fb.

F-flat locrian mode from note #2
No.1234567
NoteGbbAbbBbbCbbDbbEbbFb

Identifying the chord quality

To identify the 7th chord quality that has these notes, begin by counting the number of half-tones / semitones between the root and each of the notes.

For the 3rd interval (note 2 on the diagram) the distance between Gbb and Bbb is 4 half-tones.

Now look at the complete Note interval table, and identify the note interval that has a distance of 3 half-tones (first column), and with an interval no. of 3 (last column).

The note interval name for the 3rd note / scale degree is therefore major, also called M3 for short. More details of this interval are at Gbb-maj-3rd.

Repeating this for the 5th note / scale degree, the distance between Gbb and Dbb is 7 half-tones, and the note interval name is perfect (P5). More details of this interval are at Gbb-perf-5th.

Again the 7th note / scale degree, the distance between Gbb and Fb is 11 half-tones, and the note interval name is major (M7). More details of this interval are at Gbb-maj-7th.

Finally, we have the name of the three note intervals of this 7th chord, and can now lookup the name of the 7th chord quality having these intervals.

Looking at the Seventh chord table, the name of the 7th chord quality having major(M3), perfect(P5) and major(M7) note intervals is major 7th.

And so the complete 7th chord Name prefixes the root note, Gbb, onto this quality, giving us the Gbb maj 7 chord.

G-double-flat major 7th chord

Scale chord names using a,b and c notation

The chord symbol II could be followed by the letter a to indicate that it is Gbb major 7th chord in root position (ie not inverted) - F-flat locrian mode chord IIa.

Instead, II could be followed by the letter b to indicate that it is Gbb major 7th chord in 1st inversion - F-flat locrian mode chord IIb.

Letter c could be used to indicate that it is Gbb major 7th chord in 2nd inversion - F-flat locrian mode chord IIc.

Finally, letter d could be used to indicate that it is Gbb major 7th chord in 3rd inversion - F-flat locrian mode chord IId.

Scale chord names using figured bass notation

In place of the a-d symbols above, figured bass symbols could be used to indicate chord positions after II:

So in this key, II7 refers to the Gbb major 7th chord in root position.

For 7th chord inversions, II65 refers to the Gbb major 7th chord in 1st inversion, II43 refers to the Gbb major 7th chord in 2nd inversion, and II2 refers to the Gbb major 7th chord in 3rd inversion.

The next scale chord

The next step will need to calculate the 7th chord whose root / starting note is next mode note.

To do this, the first column we used in this step, Gbb, will be moved to the final column of the table.

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5. 3rd 7th chord in F-flat locrian mode

This step shows how to identify the notes and the name of a 7th chord whose root note is the 3rd scale degree of the F-flat locrian mode.

Identifying the 4 notes in the chord

The table below shows the F-flat locrian mode, ordered to show the 3rd note as the first column in the table.

To identify the 7th chord note names, use the 1st, 3rd, 5th and 7th columns / scale degrees, which are notes Abb, Cbb, Ebb, and Gbb.

F-flat locrian mode from note #3
No.1234567
NoteAbbBbbCbbDbbEbbFbGbb

Identifying the chord quality

To identify the 7th chord quality that has these notes, begin by counting the number of half-tones / semitones between the root and each of the notes.

For the 3rd interval (note 2 on the diagram) the distance between Abb and Cbb is 3 half-tones.

Now look at the complete Note interval table, and identify the note interval that has a distance of 3 half-tones (first column), and with an interval no. of 3 (last column).

The note interval name for the 3rd note / scale degree is therefore minor, also called m3 for short. More details of this interval are at Abb-min-3rd.

Repeating this for the 5th note / scale degree, the distance between Abb and Ebb is 7 half-tones, and the note interval name is perfect (P5). More details of this interval are at Abb-perf-5th.

Again the 7th note / scale degree, the distance between Abb and Gbb is 10 half-tones, and the note interval name is minor (m7). More details of this interval are at Abb-min-7th.

Finally, we have the name of the three note intervals of this 7th chord, and can now lookup the name of the 7th chord quality having these intervals.

Looking at the Seventh chord table, the name of the 7th chord quality having minor(m3), perfect(P5) and minor(m7) note intervals is minor 7th.

And so the complete 7th chord Name prefixes the root note, Abb, onto this quality, giving us the Abb min 7 chord.

A-double-flat minor 7th chord

Scale chord names using a,b and c notation

The chord symbol iii could be followed by the letter a to indicate that it is Abb minor 7th chord in root position (ie not inverted) - F-flat locrian mode chord iiia.

Instead, iii could be followed by the letter b to indicate that it is Abb minor 7th chord in 1st inversion - F-flat locrian mode chord iiib.

Letter c could be used to indicate that it is Abb minor 7th chord in 2nd inversion - F-flat locrian mode chord iiic.

Finally, letter d could be used to indicate that it is Abb minor 7th chord in 3rd inversion - F-flat locrian mode chord iiid.

Scale chord names using figured bass notation

In place of the a-d symbols above, figured bass symbols could be used to indicate chord positions after iii:

So in this key, iii7 refers to the Abb minor 7th chord in root position.

For 7th chord inversions, iii65 refers to the Abb minor 7th chord in 1st inversion, iii43 refers to the Abb minor 7th chord in 2nd inversion, and iii2 refers to the Abb minor 7th chord in 3rd inversion.

The next scale chord

The next step will need to calculate the 7th chord whose root / starting note is next mode note.

To do this, the first column we used in this step, Abb, will be moved to the final column of the table.

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6. 4th 7th chord in F-flat locrian mode

This step shows how to identify the notes and the name of a 7th chord whose root note is the 4th scale degree of the F-flat locrian mode.

Identifying the 4 notes in the chord

The table below shows the F-flat locrian mode, ordered to show the 4th note as the first column in the table.

To identify the 7th chord note names, use the 1st, 3rd, 5th and 7th columns / scale degrees, which are notes Bbb, Dbb, Fb, and Abb.

F-flat locrian mode from note #4
No.1234567
NoteBbbCbbDbbEbbFbGbbAbb

Identifying the chord quality

To identify the 7th chord quality that has these notes, begin by counting the number of half-tones / semitones between the root and each of the notes.

For the 3rd interval (note 2 on the diagram) the distance between Bbb and Dbb is 3 half-tones.

Now look at the complete Note interval table, and identify the note interval that has a distance of 3 half-tones (first column), and with an interval no. of 3 (last column).

The note interval name for the 3rd note / scale degree is therefore minor, also called m3 for short. More details of this interval are at Bbb-min-3rd.

Repeating this for the 5th note / scale degree, the distance between Bbb and Fb is 7 half-tones, and the note interval name is perfect (P5). More details of this interval are at Bbb-perf-5th.

Again the 7th note / scale degree, the distance between Bbb and Abb is 10 half-tones, and the note interval name is minor (m7). More details of this interval are at Bbb-min-7th.

Finally, we have the name of the three note intervals of this 7th chord, and can now lookup the name of the 7th chord quality having these intervals.

Looking at the Seventh chord table, the name of the 7th chord quality having minor(m3), perfect(P5) and minor(m7) note intervals is minor 7th.

And so the complete 7th chord Name prefixes the root note, Bbb, onto this quality, giving us the Bbb min 7 chord.

B-double-flat minor 7th chord

Scale chord names using a,b and c notation

The chord symbol iv could be followed by the letter a to indicate that it is Bbb minor 7th chord in root position (ie not inverted) - F-flat locrian mode chord iva.

Instead, iv could be followed by the letter b to indicate that it is Bbb minor 7th chord in 1st inversion - F-flat locrian mode chord ivb.

Letter c could be used to indicate that it is Bbb minor 7th chord in 2nd inversion - F-flat locrian mode chord ivc.

Finally, letter d could be used to indicate that it is Bbb minor 7th chord in 3rd inversion - F-flat locrian mode chord ivd.

Scale chord names using figured bass notation

In place of the a-d symbols above, figured bass symbols could be used to indicate chord positions after iv:

So in this key, iv7 refers to the Bbb minor 7th chord in root position.

For 7th chord inversions, iv65 refers to the Bbb minor 7th chord in 1st inversion, iv43 refers to the Bbb minor 7th chord in 2nd inversion, and iv2 refers to the Bbb minor 7th chord in 3rd inversion.

The next scale chord

The next step will need to calculate the 7th chord whose root / starting note is next mode note.

To do this, the first column we used in this step, Bbb, will be moved to the final column of the table.

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7. 5th 7th chord in F-flat locrian mode

This step shows how to identify the notes and the name of a 7th chord whose root note is the 5th scale degree of the F-flat locrian mode.

Identifying the 4 notes in the chord

The table below shows the F-flat locrian mode, ordered to show the 5th note as the first column in the table.

To identify the 7th chord note names, use the 1st, 3rd, 5th and 7th columns / scale degrees, which are notes Cbb, Ebb, Gbb, and Bbb.

F-flat locrian mode from note #5
No.1234567
NoteCbbDbbEbbFbGbbAbbBbb

Identifying the chord quality

To identify the 7th chord quality that has these notes, begin by counting the number of half-tones / semitones between the root and each of the notes.

For the 3rd interval (note 2 on the diagram) the distance between Cbb and Ebb is 4 half-tones.

Now look at the complete Note interval table, and identify the note interval that has a distance of 3 half-tones (first column), and with an interval no. of 3 (last column).

The note interval name for the 3rd note / scale degree is therefore major, also called M3 for short. More details of this interval are at Cbb-maj-3rd.

Repeating this for the 5th note / scale degree, the distance between Cbb and Gbb is 7 half-tones, and the note interval name is perfect (P5). More details of this interval are at Cbb-perf-5th.

Again the 7th note / scale degree, the distance between Cbb and Bbb is 11 half-tones, and the note interval name is major (M7). More details of this interval are at Cbb-maj-7th.

Finally, we have the name of the three note intervals of this 7th chord, and can now lookup the name of the 7th chord quality having these intervals.

Looking at the Seventh chord table, the name of the 7th chord quality having major(M3), perfect(P5) and major(M7) note intervals is major 7th.

And so the complete 7th chord Name prefixes the root note, Cbb, onto this quality, giving us the Cbb maj 7 chord.

C-double-flat major 7th chord

Scale chord names using a,b and c notation

The chord symbol V could be followed by the letter a to indicate that it is Cbb major 7th chord in root position (ie not inverted) - F-flat locrian mode chord Va.

Instead, V could be followed by the letter b to indicate that it is Cbb major 7th chord in 1st inversion - F-flat locrian mode chord Vb.

Letter c could be used to indicate that it is Cbb major 7th chord in 2nd inversion - F-flat locrian mode chord Vc.

Finally, letter d could be used to indicate that it is Cbb major 7th chord in 3rd inversion - F-flat locrian mode chord Vd.

Scale chord names using figured bass notation

In place of the a-d symbols above, figured bass symbols could be used to indicate chord positions after V:

So in this key, V7 refers to the Cbb major 7th chord in root position.

For 7th chord inversions, V65 refers to the Cbb major 7th chord in 1st inversion, V43 refers to the Cbb major 7th chord in 2nd inversion, and V2 refers to the Cbb major 7th chord in 3rd inversion.

The next scale chord

The next step will need to calculate the 7th chord whose root / starting note is next mode note.

To do this, the first column we used in this step, Cbb, will be moved to the final column of the table.

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8. 6th 7th chord in F-flat locrian mode

This step shows how to identify the notes and the name of a 7th chord whose root note is the 6th scale degree of the F-flat locrian mode.

Identifying the 4 notes in the chord

The table below shows the F-flat locrian mode, ordered to show the 6th note as the first column in the table.

To identify the 7th chord note names, use the 1st, 3rd, 5th and 7th columns / scale degrees, which are notes Dbb, Fb, Abb, and Cbb.

F-flat locrian mode from note #6
No.1234567
NoteDbbEbbFbGbbAbbBbbCbb

Identifying the chord quality

To identify the 7th chord quality that has these notes, begin by counting the number of half-tones / semitones between the root and each of the notes.

For the 3rd interval (note 2 on the diagram) the distance between Dbb and Fb is 4 half-tones.

Now look at the complete Note interval table, and identify the note interval that has a distance of 3 half-tones (first column), and with an interval no. of 3 (last column).

The note interval name for the 3rd note / scale degree is therefore major, also called M3 for short. More details of this interval are at Dbb-maj-3rd.

Repeating this for the 5th note / scale degree, the distance between Dbb and Abb is 7 half-tones, and the note interval name is perfect (P5). More details of this interval are at Dbb-perf-5th.

Again the 7th note / scale degree, the distance between Dbb and Cbb is 10 half-tones, and the note interval name is minor (m7). More details of this interval are at Dbb-min-7th.

Finally, we have the name of the three note intervals of this 7th chord, and can now lookup the name of the 7th chord quality having these intervals.

Looking at the Seventh chord table, the name of the 7th chord quality having major(M3), perfect(P5) and minor(m7) note intervals is dominant 7th.

And so the complete 7th chord Name prefixes the root note, Dbb, onto this quality, giving us the Dbb dom 7 chord.

D-double-flat dominant 7th chord

Scale chord names using a,b and c notation

The chord symbol VI could be followed by the letter a to indicate that it is Dbb dominant 7th chord in root position (ie not inverted) - F-flat locrian mode chord VIa.

Instead, VI could be followed by the letter b to indicate that it is Dbb dominant 7th chord in 1st inversion - F-flat locrian mode chord VIb.

Letter c could be used to indicate that it is Dbb dominant 7th chord in 2nd inversion - F-flat locrian mode chord VIc.

Finally, letter d could be used to indicate that it is Dbb dominant 7th chord in 3rd inversion - F-flat locrian mode chord VId.

Scale chord names using figured bass notation

In place of the a-d symbols above, figured bass symbols could be used to indicate chord positions after VI:

So in this key, VI7 refers to the Dbb dominant 7th chord in root position.

For 7th chord inversions, VI65 refers to the Dbb dominant 7th chord in 1st inversion, VI43 refers to the Dbb dominant 7th chord in 2nd inversion, and VI2 refers to the Dbb dominant 7th chord in 3rd inversion.

The next scale chord

The next step will need to calculate the 7th chord whose root / starting note is next mode note.

To do this, the first column we used in this step, Dbb, will be moved to the final column of the table.

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9. 7th 7th chord in F-flat locrian mode

This step shows how to identify the notes and the name of a 7th chord whose root note is the 7th scale degree of the F-flat locrian mode.

Identifying the 4 notes in the chord

The table below shows the F-flat locrian mode, ordered to show the 7th note as the first column in the table.

To identify the 7th chord note names, use the 1st, 3rd, 5th and 7th columns / scale degrees, which are notes Ebb, Gbb, Bbb, and Dbb.

F-flat locrian mode from note #7
No.1234567
NoteEbbFbGbbAbbBbbCbbDbb

Identifying the chord quality

To identify the 7th chord quality that has these notes, begin by counting the number of half-tones / semitones between the root and each of the notes.

For the 3rd interval (note 2 on the diagram) the distance between Ebb and Gbb is 3 half-tones.

Now look at the complete Note interval table, and identify the note interval that has a distance of 3 half-tones (first column), and with an interval no. of 3 (last column).

The note interval name for the 3rd note / scale degree is therefore minor, also called m3 for short. More details of this interval are at Ebb-min-3rd.

Repeating this for the 5th note / scale degree, the distance between Ebb and Bbb is 7 half-tones, and the note interval name is perfect (P5). More details of this interval are at Ebb-perf-5th.

Again the 7th note / scale degree, the distance between Ebb and Dbb is 10 half-tones, and the note interval name is minor (m7). More details of this interval are at Ebb-min-7th.

Finally, we have the name of the three note intervals of this 7th chord, and can now lookup the name of the 7th chord quality having these intervals.

Looking at the Seventh chord table, the name of the 7th chord quality having minor(m3), perfect(P5) and minor(m7) note intervals is minor 7th.

And so the complete 7th chord Name prefixes the root note, Ebb, onto this quality, giving us the Ebb min 7 chord.

E-double-flat minor 7th chord

Scale chord names using a,b and c notation

The chord symbol vii could be followed by the letter a to indicate that it is Ebb minor 7th chord in root position (ie not inverted) - F-flat locrian mode chord viia.

Instead, vii could be followed by the letter b to indicate that it is Ebb minor 7th chord in 1st inversion - F-flat locrian mode chord viib.

Letter c could be used to indicate that it is Ebb minor 7th chord in 2nd inversion - F-flat locrian mode chord viic.

Finally, letter d could be used to indicate that it is Ebb minor 7th chord in 3rd inversion - F-flat locrian mode chord viid.

Scale chord names using figured bass notation

In place of the a-d symbols above, figured bass symbols could be used to indicate chord positions after vii:

So in this key, vii7 refers to the Ebb minor 7th chord in root position.

For 7th chord inversions, vii65 refers to the Ebb minor 7th chord in 1st inversion, vii43 refers to the Ebb minor 7th chord in 2nd inversion, and vii2 refers to the Ebb minor 7th chord in 3rd inversion.

This completes the set of all 7th chords that harmonize with the F-flat locrian mode.

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