Minor-mode VI and VII by direction · Rules
In minor, the sixth and seventh degrees follow the melodic minor scale: raised when rising toward the tonic, natural when falling. So the raised sixth rises to the leading tone and the natural seventh does not rise to the tonic of I.
- Minor-mode VI and VII by direction: In minor, the sixth and seventh degrees follow the melodic minor scale: raised when rising toward the tonic, natural when falling. So the raised sixth rises to the leading tone and the natural seventh does not rise to the tonic of I. (Piston, ch. 4, pp. 41–44)