well, since this is a religion/philosophy thread and people seem ok with it on the forum, i'll put in my two cents. i believe sound was created along with everything else. i think it was created for us to praise God and make a joyful 'noise.' the voice was probably the first instrument to be experimented with. the fact that we have a voice, ears, and hands/fingers to play instruments is proof to me that God intended music. and, he created birds to sing for us (crickets to chirp) - so many sounds of the evening and morning and daytime.
there's a scripture about 'there is no voice or spoken word...' somewhere in psalms where it is speaking about the 'heavens' quietness (physically speaking). and, yet, our music, prayers, and songs reach God in the highest realm. his angels sing praises, too, i think, because in luke 2:14 when Christ was born, the angels sang 'glory to God in the highest, and on earth peace among men with whom He is pleased.' handel's messiah is the closest we come to the 'heavenly voices' of that choir in heaven.
rev. 14:1-3 speaks of 'a voice which i heard like the sound of harpists playing on their harps (pianos? just a question) and they sang a new song before the throne...'