Simply through hearing the sound of his voice singing, God sees which enemy is oppressing us, which of the seventy nations with their seventy languages. Then God saves us from trouble. When a harsh decree is passed against the Jews, God forbid, and one of the nations rises up against us, it is very good to sing the song or anthem of that nation. When our cries and singing are directed towards Heaven, it arouses God's love. From a person's voice you can tell whether he is powerful or not and to what degree.
Music sweetens the harsh judgements.
Man is endowed with an image-making faculty, which is one of the most powerful forces in his life, because it is through this that he forms his concepts. But because it is linked to the imagination, it is seriously prone to error. Good and evil are mixed up. But music played by a truly God-fearing player for the sake of Heaven has a wonderful power to subdue the wildness of the imagination, and the good is sifted from the bad. Such music has the power to lift you from depression and inspire you with joy.