Superphrygian natural 6 Mode on Guitar: Notes, Chords & Examples

  • May 21, 2026

Superphrygian ♮6 is a dark, tense, exotic-sounding mode with a strong “outside” flavor.

It has the immediate bite of Phrygian because of the b2, but it also has a strange twist: a b4 and a ♮6. That combination gives it a sound that can feel:

  • Sinister
  • Unstable
  • Progressive
  • Fusion-heavy
  • Dark but not completely “sad”

For guitarists, this mode works especially well over droning low-string riffs, diminished movement, and altered dominant chords. It is not a common “radio song” mode, but it is very useful for progressive rock, metal, fusion, cinematic writing, and experimental harmony.

Think of it as a more twisted cousin of Phrygian or Dorian:

  • Phrygian gives you: 1 b2 b3 4 5 b6 b7
  • Dorian gives you: 1 2 b3 4 5 6 b7
  • Superphrygian ♮6 gives you: 1 b2 b3 b4 5 6 b7

That b4 is the unusual note. In C, it is spelled Fb, which sounds the same as E natural on the guitar.

How does it sound?

Before anything else, let’s hear how it sounds. This can best be done by playing a chord from the mode, and playing the notes of the mode arpeggiated on top of it. This is the best and quickest way to determine the feel of a mode.

This can be quickly done using SLModes, a software dedicated to the music modes, and the following sound was generated by it:

Formula

The interval formula for C Superphrygian ♮6 is:

1 b2 b3 b4 5 6 b7

Or, using interval names:

P1 m2 m3 d4 P5 M6 m7

Compared to natural minor, it has:

  • b2 instead of 2
  • b4 instead of 4
  • ♮6 instead of b6

Compared to Phrygian, it has:

  • b4 instead of 4
  • ♮6 instead of b6

Notes in C

The notes of C Superphrygian ♮6 are:

C Db Eb Fb G A Bb

On guitar, remember that:

Fb sounds the same as E natural

So the playable pitch set is:

C Db Eb E G A Bb

But theoretically, the note is spelled Fb because it functions as the lowered fourth degree of the mode.

The Chord That Defines the Mode

The most practical defining chord for C Superphrygian ♮6 is:

C7(b9 #9 13)

This may look surprising at first because the mode is spelled with Fb, not E. But on guitar, Fb sounds like E, which can function enharmonically as the major third of a C dominant chord.

Here is how the mode fits over C7(b9 #9 13):

  • C = root
  • Fb / E = major 3rd, enharmonically
  • G = 5th
  • Bb = b7
  • Db = b9
  • Eb = #9
  • A = 13

That chord captures almost the entire character of the mode:

  • The b9 gives it Phrygian darkness.
  • The #9 gives it bluesy altered tension.
  • The 13 adds a bright, unexpected lift.
  • The dominant 7th shell gives it fusion and prog-rock bite.

If you want a more minor-centered sound, you can also use:

Cm6(add b9) Notes: C Eb G A Db

This leaves out the strange Fb/E color, but it works well for dark modal vamps.

For the full Superphrygian ♮6 sound, though, C7(b9 #9 13) is the most guitar-friendly defining chord.

Chord Progression (Example)

Because this mode contains a b4 and lacks a normal perfect 4, some of the diatonic chords are unusual. That is part of the charm.

Roman numerals: i7 – bIII7 – i7 – VIø7

Chords in C: Cm7 – Eb7 – Cm7 – Am7b5

This progression keeps C minor as the center but brings in the mode’s color tones through Eb7 and Am7b5.

  • Cm7 gives you the dark tonic sound.
  • Eb7 includes Db, highlighting the b2 color against C.
  • Am7b5 uses the ♮6, A, in a tense half-diminished shape.

Mood: Dark, moody, and slightly jazzy. Great for fusion rhythm parts or progressive clean sections.

Guitar Fretboard Shape

Here’s the mode mapped across the full fretboard, generated with my software SLModes.

The diagram shows every occurrence of the mode across the neck:

🟢 Green dots = the root note, your anchor points
🟠 Orange dots = the rest of the scale tones

Why Guitarists Love This Mode

C Superphrygian ♮6 is not a “safe” mode. That is exactly why it is useful.

Emotional Flavor

The mode sounds dark and tense, but the ♮6 keeps it from feeling like ordinary Phrygian or natural minor.

The b2 gives it menace.

The b3 gives it a minor identity.

The b4 creates a strange internal clash.

The ♮6 adds a sharp, unexpected brightness.

That makes the mode feel unstable in a musical way.

Riff Potential

This mode is excellent for riffs built around a low C pedal.

Try using:

C - Db - C - Eb - Fb/E - C

Or:

C - Bb - A - G - Eb - Db - C

The half-step movement between C and Db is perfect for heavy riffs.

The chromatic cluster:

Db - Eb - Fb/E

is especially useful for progressive metal and fusion lines.

Soloing Applications

This mode works well over:

  • C7(b9 #9 13)
  • Cm6(add b9)
  • Cm7 with outside color
  • Diminished vamps
  • Static C pedal tones

When soloing, do not treat every note equally.

Target the strong color tones:

  • Db for Phrygian bite
  • Eb for minor emotion
  • Fb/E for the strange b4 tension
  • A for the ♮6 lift
  • Bb for dominant/minor 7th pull

Genres Where It Works Well

C Superphrygian ♮6 fits naturally in:

  • Progressive metal
  • Fusion
  • Jazz-rock
  • Experimental rock
  • Dark cinematic music
  • Technical death metal
  • Modern instrumental guitar music
  • Home-produced modal compositions

It is especially effective when you want something darker than Dorian but less predictable than Phrygian.

Tips for Practicing

Use a C Drone

Put on a low C drone and slowly play the mode against it.

Listen carefully to each note.

Spend extra time on:

  • Db against C
  • Fb/E against C
  • A against C

These are the notes that make the mode feel unique.

Try Simple Chord Vamps

Start with one-chord vamps before writing full progressions.

Good options:

Cm6(add b9)
C7(b9 #9 13)
Cm7 to Bbdim

Loop the chord and improvise using the scale shape.

Improvise with Small Motifs

Do not start by shredding through the whole mode.

Instead, make short phrases like:

C - Db - Eb - C
C - Eb - Fb/E - G
A - Bb - C - Db

Repeat them rhythmically and move them around the fretboard.

Target the Intervals

For stronger modal phrasing, aim for specific intervals over the C root:

  • b2 for tension
  • b3 for minor color
  • b4 for the signature weirdness
  • 6 for lift
  • b7 for dominant/minor resolution

A great exercise is to bend or slide into these notes from a half-step below.

For example:

C to Db
D to Eb
Eb to Fb/E
G# to A
A to Bb

This makes the mode sound vocal and intentional.

If you like modes, SLModes is for you

SLModes is the software for exploring everything related to music modes.

It helps you experiment with:

  • Modal chords
  • Guitar fretboard shapes
  • Chord progressions
  • Modal modulation
  • Negative harmony ideas

If you play guitar and want to access 60+ music modes, SLModes is waiting for you

Learn more about SLModes

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