The hardest ground to plow
The hardest ground to plow was living fully without worry, not in the past gone on or future yet to come—but in the present hardpan now.
Music was bestowed on humankind for the sake of effecting harmonious revolutions of the soul within us whenever its rhythmic motions are disturbed. Thus when the soul has lost its harmony, melody, and rhythm, music assists in restoring it to order and concord.