Neapolitan Chords
A Neapolitan chord is a major chord
built on the flattened second scale degree of a major or minor scale.
For example, the Neapolitan chord in the key of C-Major or C-minor
would be a D-flat-Major chord.
Neapolitan chords are often
used in first inversion, and are often called Neapolitan-sixth chords
because of the interval of a sixth occurring in the inversion.
Neapolitan-sixth