Music Theory

Neapolitan chord A Neapolitan chord is a major chord built on the  flat second (supertonic / 7) scale degree Neapolitan Chords move to the dominant The Neapolitan sixth is a chromatic predominant chord. This includes the b2, 4, and b6. The Neapolitan triad and augmented sixth chords are considered pre-dominant chords. The Neapolitan six is called a sixth because it is written and played in first inversion. This picture shows how the Neapolitan sixth can be used. - (Music Theory Academy) Voice leading and Neapolitan chords. -(musictheoryteacher.com) This video explains what a Neapolitan chord is by definition This video shows how the Neapolitan chord can make your composition more interesting

Modal Mixture The "mixing" or "borrowing" of parallel modes from each other is known as modal mixture. Mixture mostly happens in major keys. When the bIII and bVII chords are "borrowed" from the parallel minor scale. Common mixtures are those that include a flat 6th. Modal mixture, is when one or more chords from the parallel minor is used in the piece.  Here is an example explaining the use of and incorporation of multiple modes over one chord This video above defines modal mixture.