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Music theory definition

Neapolitan chord

A major chord on the lowered 2nd degree (♭II), usually in first inversion.

More borrowing

The (♭II): D♭/F in C. A dramatic lead-in to V.

Learn it in context

This term is introduced in Unit 16: Extended and altered harmony. Work through the explanations and exercises to connect the definition with music.

Extension
A chord tone beyond the 7th: the 9th, 11th, or 13th.
Tritone substitution
Replacing a dominant 7th with the dominant 7th a tritone away (D♭7 for G7). They share the same tritone.
Altered chord
A dominant chord with raised or lowered 5ths or 9ths for extra tension.
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