Music is one of the important arts. It has a great effect upon the human spirit. Musical melodies are a certain something which prove to be accidental upon etheric vibrations, for voice is nothing but the expression of vibrations, which, reaching the tympanum, affect the nerves of hearing. Musical melodies are, therefore, those peculiar effects produced by, or from, vibration. However, they have the keenest effect upon the spirit. In sooth, although music is a material affair, yet its tremendous effect is spiritual, and its greatest attachment is to the realm of the spirit. If a person desires to deliver a discourse, it will prove more effectual after musical melodies. The ancient Greeks, as well as Persian philosophers, were in the habit of delivering their discourses in the following manner: -- First, playing a few musical melodies, and when their audience attained a certain receptivity thereby they would leave their instruments at once and begin their discourse. Among the most renowned musicians of Persia was one named Barbod, who, whenever a great question had been pleaded for at the court of the King, and the Ministry had failed to persuade the King, they would at once refer the matter to Barbod, whereupon he would go with his instrument to the court and play the most appropriate and touching music, the end being at once attained, because the King was immediately affected by the touching musical melodies, certain feelings of generosity would swell up in his heart, and he would give way. You may try this: If you have a great desire and wish to attain your end, try to do so on a large audience after a great solo has been rendered, but it must be on an audience on which music is effective, for there are some people who are like stones, and music cannot affect stones.
Music is an important means to the education and development of humanity, but the only true way is through the Teachings of God. Music is like this glass, which is perfectly pure and polished. It is precisely like this pure chalice before us, and the Teachings of God, the utterances of God, are like the water. When the glass or chalice is absolutely pure and clear, and the water is perfectly fresh and limpid, then it will confer Life; wherefore, the Teachings of God, whether they be in the form of anthems or communes or prayers, when they are melodiously sung, are most impressive.
It was for this reason that His Holiness David sang the psalms in the Holy of Holies at Jerusalem with sweet melodies. In this Cause the art of music is of paramount importance. The Blessed Perfection, when He first came to the barracks (Acca) repeated this statement: "If among the immediate followers there had been those who could have played some musical instrument, i.e., flute or harp, or could have sung, it would have charmed every one." In short, musical melodies form an important role in the associations, or outward and inward characteristics, or qualities of man, for it is the inspirer or motive power of both the material and spiritual susceptibilities. What a motive power it is in all feelings of love! When man is attached to the Love of God, music has a great effect upon him. (Extract from a “Table Talk”, Acca, July 1909, quoted in “Herald of the South”, January 13, 1933, pp. 2-3; The Compilation of Compilations, vol. 2. pp. 76-78)