tonality

n. (pl. -ies) 1 mus. A relationship between the tones of a musical scale. B observance of a single tonic key as the basis of a composition. 2 colour scheme of a picture.

n. The principle of key in music; the character which a composition has by virtue of the key in which it is written, or through the family relationship of all its tones and chords to the keynote, or tonic, of the whole.