bII roman degree
The Neapolitan — a major chord on the LOWERED 2nd degree, a chromatic predominant of dark, 'Spanish' (Phrygian) colour. It falls toward the dominant with dramatic weight.
Where it lives
1semitones from the tonic
Major mode
major triad
1semitones from the tonic
Minor mode
major triad
Hear it in context: Phrygian Vamp
Piano sound loads on first tap. Resolved in the key of C — every chord links to its full analysis.