4. THE HALF-MINOR SCALE.

The Half-Minor Scale contains the Minor Third, while its other intervals are identical with those of the Major Scale. This is the case in descending, where the seventh and sixth are lowered, as well as in ascending.

Furthermore, we have the Chromatic Scale, a regular progression in semitones, which is much used by modern composers; and the Enharmonic Scale, which may be said to exist only in notation, since it is not executable on most of our musical instruments, but which is likely to become important in the music of a future period when our instruments have been brought to the degree of perfection which permits the most delicate modifications in pitch by the performer, and which is at present almost alone obtainable on instruments of the violin kind.