many other Advantages, which he improv'd with great Care and
Application, that made him a finish'd _Genius_, both in Arms and
Policy.

There is yet another Thing of Consequence to a true _Genius_ in
Musick. A Knowledge of the Compass and peculiar Advantages of
each several Instrument. For the same Composition will very
differently touch both the Ear and the Mind, as perform'd by a
Flute, or Trumpet, an Organ, or a Violin. A difference of which,
all discern by the Ear, but which requires a judicious
Observation in the Composer. Mr. _Hughes_ has thus express'd
their different Powers.

_Let the Trumpet's shrill Voice,
And the Drum's thundering Noise
Rouse every dull Mortal from Sorrow profound.
_And_,
Proceed, sweet Charmer of the Ear,
Proceed, and through the mellow Flute,
The moving Lyre,
And Solitary Lute,
Melting Airs, soft Joys inspire,
Airs for drooping Hope to hear.
_And again,
_Now, let the sprightly Violin
A louder Strain begin:
And now,
Let the deep mouth'd Organ blow,
Swell it high and Sink it low.
Hark! how the Treble and the Base
In wanton Fuges each other chase,
And swift Divisions run their Airy Race.
Thro' all the travers'd Scale they fly,
In winding Labyrinths of Harmony,
By turns They rise and fall, by Turns we live and die._

One might not unfitly compare to this difference of Instruments,
the different Make and Constitution of Mens Bodies, with the
Influence they have, and the Impression they make on their Minds,
Passions and Actions. From hence alone they may know much, how to
direct their own proper Capacities, and how they are to suit each
Person they are to use, to the most proper Employment. As Mr.
_Pope_ Speaks of the Instruments of Musick.

_In a sadly pleasing Strain,
Let the warbling Lute complain.
Let the loud Trumpet sound,
Till the Roofs
all around The shrill Echo's rebound.
While in more lengthen'd Notes and slow,
The deep, majestick, solemn Organs blow._

Harmony, in its most restrain'd Sense, is the apt and agreeable
mixture of various Sounds. Such a Composition of them as is
fitted to please the Ear. But every thing in a more extended
Sense is harmonious, where there is a variety of Things dispos'd
and mix'd in such apt and agreeable Mann