Spiritual sensations can also be transmitted using the language of music. The advantage of this language is that even a person who has not mastered any other Kabbalistic language, not yet seeing the spiritual information, can be emotionally inspired even if a little, by the sensations of the spiritual world experienced by a Kabbalist who created this music. This is feasible because the melody that enters a person penetrates him without any resistance, for it is not transformed by thought or mind, perception or analysis. Rather, it strikes the heart directly. Without realizing it, a person starts sensing from within himself or herself certain actions carried out by music or what is hidden it in.
Courtesy of http://www.youtube.com/watch?v=rZ1_M_L_RSI