The Neapolitan 6th is a chromatic chord built on the flattened supertonic of a key. In modern terms we could think of it as a flattened second chord 1st inversion. Remember that in Roman numeral analysis, first inversion chords are represented by a 6, while second inversions chords are represented by 6/4. It is predominantly written in its 1st inversion and has a very distinctive sound.. For example, in the key of C major and C minor the Neapolitan sixth would be a D flat chord in its 1st inversion: Context: The Neapolitan sixth is essentially a chromatic version of a chord. By lowering the chord's root by a half-step (in this case, the B becomes a B flat) we get a Neapolitan sixth chord.It receives the name sixth because it is commonly used in first inversion.. In the following image, we show the i - ii o6 - V - i chords in the key of A minor. Overview: The Neapolitan sixth is a chromatic predominant chord.It is a major triad built on (ra) and is typically found in first inversion.. A German sixth chord is one of the augmented sixth chords. You might wonder how a D-flat major chord will fit in a the key of C major, but in the first inversion (6) it functions the same as the IV or the II 6 chord but has a unique sound.Again, build a Neapolitan 6th chord by lowering the second note of a major scale. It functions the same and can be used in the same context but it has a more dramatic effect because of its chromatic root, (ra).Like , it is typically used in a cadential context. If a German sixth chord resolves to the neapolitan, it can serve as a pivot chord to tonicize the Neapolitan as a tonic. In traditional harmony, chords in first inversion are sometimes called sixth chords. In the C major example the chord would be F-F-Ab-Db. Most weird chord constructions actually come about in chromatically altering voices in respect to some standard way of approaching a certain goal. a Neapolitan chord (or simply a "Neapolitan") is a major chord built on the lowered second (supertonic) scale degree.It most commonly occurs in first inversion so that it is notated either as ♭II 6 or N 6 and normally referred to as a Neapolitan sixth chord. The Neapolitan sixth can also occur after a German sixth chord. The Neapolitan sixth chord is an altered second degree chord with a subdominant function. In C-major, the chord is known as A♭add+6 chord, with the notes A♭, C, E♭, and F♯. Because the Neapolitan chord is typically in first inversion, it is often referred to as the “Neapolitan Sixth,” labeled as N 6 or ♭ II 6. Pre-dominants are a particularly varied bunch - Neapolitan, German 6, French 6, V7/V7 and so on. Harmonic functions Nonharmonic Tones Secondary Dominants Modulation Augmented Sixths Neapolitan Sixth The “Neapolitan 6th” chord is a 1st inversion of the supertonic [chord two] triad but with the root and fifth lowered a half step.