From The Wilson Quarterly:
Music is both a balm for loneliness and a powerful, renewable source of meaning—meaning in time and meaning for time. The first thing music does is banish silence. Silence is at once a metaphor for loneliness and the thing itself: It’s a loneliness of the senses. Music overcomes silence, replaces it. It provides us with a companion by occupying our senses—and, through our senses, our minds, our thoughts. It has, quite literally, a presence. We know that sound and touch are the only sensual stimuli that literally move us, that make parts of us move: Sound waves make the tiny hairs in our inner ears vibrate, and, if sound waves are strong enough, they can make our whole bodies vibrate. We might even say, therefore, that sound is a form of touch, and that in its own way music is able to reach out and put an arm around us.
One way we are comforted when we’re lonely is to feel that at least someone understands us, knows what we’re going through. When we feel the sympathy of others, and especially when we feel empathy, we experience companionship—we no longer feel entirely alone. And strangely enough, music can provide empathy. The structure of music, its essential nature—with many simultaneous, complex, overlapping, and interweaving elements, events, components, associations, references to the past, intimations of the future—is an exact mirror of the psyche, of the complex and interwoven structure of our emotions. This makes it a perfect template onto which we can project our personal complexes of emotions. And when we make that projection, we hear in music our own emotions—or images and memories of our emotions—reflected back. And because the reflection is so accurate, we feel understood. We recognize, and we feel recognized. We’re linked with the composer of the music by our common humanity. And if a composer has found a compelling way to express his or her own emotions, then to a certain extent that composer can’t really avoid expressing, and touching, ours as well.