Neapolitan scale

The major and minor Neapolitan scales are instead differentiated by the quality of their sixth.

The scale therefore shares with the Phrygian mode the property of having a minor second above the tonic.

[1] The 4th mode of the Neapolitan major, also known as the Lydian Dominant ♭6 scale, is an excellent choice for the 9 ♯11 ♭13 chord.

A whole tone scale is often used but that mode tends to be minus the ♮5 that the Lydian Minor contains.

The scale contains the following modes: [5] [6] (or Aeolian/Natural Minor ♯4) (or Lydian Augmented ♯6) (or Altered Dominant ♯2)