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A prometheus neapolitan Scale — Guitar Fretboard Visualization

Low E string: F#, G, A, Bb, C#, D# at frets 2, 3, 5, 6, 9, 11

A string: A, Bb, C#, D#, F#, G, A at frets 0, 1, 4, 6, 9, 10, 12

D string: D#, F#, G, A, Bb, C# at frets 1, 4, 5, 7, 8, 11

G string: G, A, Bb, C#, D#, F#, G at frets 0, 2, 3, 6, 8, 11, 12

B string: C#, D#, F#, G, A, Bb at frets 2, 4, 7, 8, 10, 11

High E string: F#, G, A, Bb, C#, D# at frets 2, 3, 5, 6, 9, 11

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A prometheus neapolitan

The prometheus neapolitan scale darkens the prometheus scale by lowering its 2nd: root, flat 2nd, major 3rd, raised 4th, 6th, flat 7th. The Neapolitan flat 2nd adds a Phrygian shadow to an already floating whole-tone-ish set, giving lines an exotic snap right at the start of the scale. A niche but memorable color over altered dominants.

it consists of these notes and degrees:

A

I

B♭

bII

C♯

III

D♯

#IV

F♯

VI

G

bVII

prometheus neapolitan in all 12 keys, with chords and related scales

tip
  • Prometheus with a phrygian doorstep: open with b2 (Bb) against the root, then float through III, #IV (D#), VI, bVII (G).
  • Over an altered dominant vamp on A, the b2 (Bb) reads as a b9; the rest of the scale keeps the 13#11 shimmer.
  • Contrast the two 2nds across phrases: a prometheus line (natural II) answered by this scale's b2 (Bb) makes a two-scale hook.
  • With no 5th, keep the root sounding low; a bass pedal on A is what keeps this scale legible.

How to play A prometheus neapolitan on guitar

Open A gives the root while open G supplies the minor seventh, which lets a two-string pedal exist before the fretting hand moves. Fretted roots stack at the 2nd fret, the 5th, and the 7th, so octave leaps stay within one hand position. B string root waits at the 10th. First shape expires at the 9th fret, and one augmented second turns up in the fingering.

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