Major-minor tonality refers to a harmonic system that balances the use of major and minor key centers in music. This tonality is also known as tonal ambiguity, dual tonality, or mixed tonality. In this system, composers often use major and minor scales simultaneously or interchangeably to create a feeling of tension and release. Other synonyms for major-minor tonality include modal mixture, chromatic harmony, and modal interchange. Modal mixture refers to the use of chords and melodies from different modes within the same key, while chromatic harmony involves the use of non-diatonic chords. Modal interchange involves borrowing chords from parallel or closely related keys. All these terms highlight the complex and creative use of tonality to create emotive and dynamic music.