Minor scale based on the accidentals of the "natural" minor scale, not on those of the harmonic or melodic minor scales. For example, a piece in E minor will have one sharp in its key signature because the E natural minor scale has one sharp (F). Major and minor keys that share the same key signature are "relative" to each other. For instance, F major is the relative major of D minor since both have key signatures with one flat. Since the natural minor scale is built on the 6th degree of the major scale, the tonic of the relative minor is
Harmonic major scale which are also considered borrowed from the parallel minor: the minor subdominant, Dom 7 9, the supertonic diminished triad, the supertonic half-diminished seventh chord, and the fully diminished seventh leading tone chord. It also contains an augmented triad. The harmonic major scale has its own set of modes, separate from the harmonic minor, melodic minor, and major modes, depending on which note serves as the tonic. For example, a B major scale consists of the notes: B C D E F G A; whereas a B harmonic major scale consists of the notes: B C D E F G A.