It sounds like Gibran is expecting the world to become one of sound, of a celestial melody, at the end times, but this is metaphor for the world of disharmony/materialism becoming a world of harmony/spirit. It sound like a wonderful thing the way Gibran describes it here, and indeed it is, but don't forget that before we can have that wonderful spring come to melt the snow and warm our hearts, there must be a winter to bring that snow in the first place, and that is what we have been experiencing in the past few decades. 
    The snow is, of course, also metaphor. It represents hardship, difficulties, the horrors brought about by man's insistence that he can run things and doesn't need God interfering ( or that God should intervene only when, where, and how man asks Him to as if God was our servant when it is supposed to be us who serve God). The “snow” comes in many forms: disease, storms, wars, famine, floods, etc.   ANd in the past few years, these hardships have been getting more common and that will continue into next year.
    To some extent, the snow can be avoided, but it requires us to wake up to reality. Before the Spring Gibran wrote about can set us free, we have to acknowledge that we have become prisoners of our own greed and materialism, our own lack of faith, and our willingness to do the work of Satan and his dark forces, and we have to turn to God to set us free. And not a god we have made in our own image, but the true God of spirit.