Mixture,
Mischung. Mixture refers to the borrowing of notes
or chords from the parallel key. In 
major, the
minor chord is understood as mixture, as is 
minor. Both are borrowed from the key of
minor. Secondary mixture involves the employment of other altered
chords based on the roots of the original diatonic scale. For example,
in
major, 
major is simple mixture, III
of
minor, but D major is secondary mixture, an alteration of the quality
of the diatonic chord, D minor. Much less frequently encountered,
double mixture is secondary mixture applied to simple mixture. In
major, minor
would be an example of double mixture. Simple mixture occurs in Variation 2, and is the basis of Variations 5, 6, and 13. Secondary mixture is used in Variation 9. As shown below, simple mixture provides a direct opposition of major and minor sonorities in Variation 10. |
