Abstract: The internal relations of the artistic characteristics cons t i tute the fundamental feature of music. Musicis, first and foremost, a kind of sound existence. This is the leading character of music, around which other musicaltrai ts derive. As an existence of sound, music is spread in the stream of time, in which lies the character of timeliness. But owing to the unidirectivity of time flowage, music must be replayed in want of reappreciation. In addition,the sound of music is non-semantic, which results in the variation of feeling in the course of music appreciation. Andmusic is made certain in virtue of non-sounds certainty.

Key words: art of sound, timeliness, replay, non- semantic, emotional uncertainty