Chords in C dorian ♯4

Cm · D · E♭ · F♯° · Gm · A° · B♭+

The course explains what this page shows in Lesson 19 · Harmonising the scale.

The chords in C dorian ♯4

  1. iCmCm7
  2. IIDD7
  3. IIIE♭E♭maj7
  4. iv°F♯°F♯°7
  5. vGmGmMaj7
  6. vi°A°Am7♭5
  7. VII+B♭+B♭+maj7

The chords of C dorian ♯4 are Cm, D, E♭, F♯°, Gm, A° and B♭+. With a seventh added they become Cm7, D7, E♭maj7, F♯°7, GmMaj7, Am7♭5 and B♭+maj7.

If you stack every other note of C dorian ♯4, starting from each degree in turn, these are the chords you get. Nobody chose them: each one is built from the scale's own notes, arranged in thirds.

Every chord, where it lives

iCmIIDIIIE♭iv°F♯°vGmvi°A°VII+B♭+
Open1♭315513151♭51♭3113♯5
Fret 11♭3151515131♯513♯5
Fret 22fr1♭51♭32fr13♯5
Fret 33fr151♭353fr13153fr151♭351
Fret 44fr131354fr13154fr1♭51♭3
Fret 55fr151355fr131355fr15151♭35fr1♭51♭3
Fret 66fr151356fr13♯51
Fret 77fr1♭31♭57fr1♭51♭37fr1♯513♯5
Fret 88fr151♭3518fr1♭5♭3♭58fr1♭3158fr1♯51♯513
Fret 99fr1♭51♭3
Fret 1010fr15151♭310fr15135110fr151♭3510fr1♭31♭5
Fret 1111fr151311fr15135111fr1♭5♭3♭511fr13♯51

The grid places seven chords across twelve home frets on drop D guitar.

Read down a column to find one chord all over the neck. Each shape appears once, in the row for the fret it starts on. No single position puts every chord of this key within reach, so no rows are marked in the margin.

Shapes for each chord

Cm i
1♭3151♭318fr151♭3513fr151♭35
D II
5135313513
E♭ III
151151513151315
F♯° iv°
2fr1♭51♭32fr1♭51♭314fr1♭51♭34fr11♭51♭3
Gm v
3fr151♭3513fr151♭353fr151♭35♭33fr1♭351
A° vi°
♭51♭3♭5♭35fr1♭51♭35fr1♭51♭31
B♭+ VII+
113♯51♯513♯52fr13♯51♯513

These are the most playable shapes for each chord, starting from the lowest position. Every shape fits within the reach of one hand, so none of them needs a finger you do not have.

Progressions in C dorian ♯4

Three chord
  1. iCm
  2. iv°F♯°
  3. vGm
CmiF♯°iv°GmvCCDE♭F♯GGAB♭+2+3+1+2+1

One of the six lines between these chords is flat: that note belongs to both chords, so it stays where it is. No voice moves more than three semitones.

Every one of these chords comes from C dorian ♯4.

Axis
  1. iCm
  2. vGm
  3. vi°A°
  4. iv°F♯°
CmiGmvA°vi°F♯°iv°CB♭CCE♭DE♭F♯GGAA−2+2−1+1+3+2

Three of the nine lines between these chords are flat: those notes belong to both chords, so they stay where they are. No voice moves more than three semitones.

Every one of these chords comes from C dorian ♯4.

Doo-wop
  1. iCm
  2. vi°A°
  3. iv°F♯°
  4. vGm
CmiA°vi°F♯°iv°GmvCCCDE♭E♭F♯GGAAB♭+2+3+1+2+1

Four of the nine lines between these chords are flat: those notes belong to both chords, so they stay where they are. No voice moves more than three semitones.

Every one of these chords comes from C dorian ♯4.

ii–V–I
  1. II7D7
  2. vmaj7GmMaj7
  3. i7Cm7
D7II7GmMaj7vmaj7Cm7i7CB♭B♭DDCF♯F♯E♭AGG−2−2−3−2

Four of the eight lines between these chords are flat: those notes belong to both chords, so they stay where they are. No voice moves more than three semitones.

These are the third and the seventh of each chord on their own. Together they decide whether a chord is major, minor or dominant, which is why they are called guide tones. If you play only these two notes, you can still hear the chords change. If you play only the root and the fifth, you cannot. Two of the four lines between these chords are flat: those notes belong to both chords, so they stay where they are. No voice moves more than three semitones.

D7II7GmMaj7vmaj7Cm7i7CB♭B♭F♯F♯E♭−2−3

Every one of these chords comes from C dorian ♯4.

Rhythm changes
  1. i7Cm7
  2. viø7Am7♭5
  3. II7D7
  4. vmaj7GmMaj7
Cm7i7Am7♭5viø7D7II7GmMaj7vmaj7CCCB♭E♭E♭DDGGF♯F♯B♭AAG−2−1−1−1−2

Seven of the twelve lines between these chords are flat: those notes belong to both chords, so they stay where they are. No voice moves more than two semitones.

This diagram again follows only the guide tones, the third and seventh of each chord. Two of the six lines between these chords are flat: those notes belong to both chords, so they stay where they are. No voice moves more than three semitones.

Cm7i7Am7♭5viø7D7II7GmMaj7vmaj7E♭CCB♭B♭GF♯F♯−3−2−3−1

Every one of these chords comes from C dorian ♯4.

Twelve-bar blues
  1. I7C7
  2. I7C7
  3. I7C7
  4. I7C7
  5. IV7F♯7
  6. IV7F♯7
  7. I7C7
  8. I7C7
  9. V7G7
  10. IV7F♯7
  11. I7C7
  12. V7G7
C7I7F♯7IV7C7I7G7V7F♯7IV7C7I7G7V7CC♯CDC♯CDEEEFEEFGF♯GGF♯GGB♭A♯B♭BA♯B♭B+1−1+2−1−1+2+1−1+1−1+1−1+1+1−1+1

Eight of the 24 lines between these chords are flat: those notes belong to both chords, so they stay where they are. No voice moves more than two semitones. The progression lasts twelve bars, but a repeated chord is not a change, so the ladder shows only the six places where the harmony moves.

This diagram again follows only the guide tones, the third and seventh of each chord. Six of the twelve lines between these chords are flat: those notes belong to both chords, so they stay where they are. No voice moves more than one semitone. The progression lasts twelve bars, but a repeated chord is not a change, so the ladder shows only the six places where the harmony moves.

C7I7F♯7IV7C7I7G7V7F♯7IV7C7I7G7V7EEEFEEFB♭A♯B♭BA♯B♭B+1−1+1+1−1+1

None of these chords belongs entirely to C dorian ♯4: all three of them use notes the key does not contain (E, C♯, B and F). No single key contains all of them. Every one is a dominant seventh, and a dominant seventh pulls towards the chord whose root is a fifth below its own, one step anticlockwise on the circle (C7 → F, F♯7 → B, G7 → C). A chord drawn dashed, here and on the circle, goes outside the key.

There are six progressions in C dorian ♯4, including Three chord (Cm F♯° Gm) and Axis (Cm Gm A° F♯°).

Each row is one progression. It is written first in roman numerals, which name each chord by the degree of the scale it is built on, and then as the chords those numerals stand for in this key. A dashed outline means the chord borrows a note that C dorian ♯4 does not contain. Under each progression, a diagram follows every note from one chord to the next. A flat line is a note that stays where it is, and a sloped line is labelled with the number of semitones the note moves.

C dorian ♯4 on the circle of fifths

—1♯2♯3♯4♯5♯6♯5♭4♭3♭2♭1♭CAmGEmDIIBmA°vi°F♯mEC♯mBG♯mF♯°iv°D♯mD♭B♭mA♭FmE♭IIICmiB♭+VII+GmvFDmC Dorian ♯42♭

Each step clockwise around the wheel moves up a perfect fifth and adds a sharp to the key signature, or takes a flat away. The small numbers around the rim show each key's signature. C dorian ♯4 has two flats in its key signature. Its F♯ is not part of the signature, so it is written as an accidental each time it appears.

Why the chords land where they do

The two rings work in pairs. Each minor key on the inner ring is the relative minor of the major key just outside it: the two are built from the same seven notes and share a key signature. C major and A minor are one such pair.

Its two major chords, D and E♭ (the II and III), sit five steps apart on the outer ring rather than side by side. Its two minor chords, Cm and Gm (the i and v), sit together on the inner ring. That accounts for four of the seven chords, and no single block contains them.

The other three chords sit apart and are outlined on their own. F♯°, the iv°, is three steps from the nearest chord in the group. A°, the vi°, is one step from the nearest chord in the group. B♭+, the VII+, shares a spoke with Gm.

The wheel is still a map of harmonic distance, but this scale covers more of it than a major key does. Chords that sit close together sound as though they belong to one key, while each of the three that sit apart sounds like a departure. That sense of movement is a large part of this scale's character.

One step, on the neck

On the guitar, a perfect fifth is a shape you already know: the power chord, a root followed by the note two frets higher on the next string up, wherever the two strings are a fourth apart. Here it starts on C. The first step lands on the same fret, because the pair D–A is a fifth apart.

DADGBE10111213CGD

Now think of it as a chain. The G you are already fretting is the fifth of C, and it is also the root of the next chord clockwise. Play the same shape starting from G and you reach D. C → G → D is two steps around the wheel, and the same movement repeated up the neck.

The pair A–D is a fourth apart, so that step uses the usual two-fret shape. Higher up, the G–B pair breaks the pattern again. To work out any pair, count the semitones between the two strings and subtract that from seven. A fourth gives two frets, a fifth gives none, and a major third gives three.

C dorian ♯4 has two flats in its key signature. Its F♯ is written as an accidental. Four of its chords sit close together on the circle of fifths, and three sit apart.

Four of C dorian ♯4's seven chords sit near each other on the wheel, and three sit apart.