Definition.com
Music is a form (of time and sound) that rids us of the pervasive illusion that time is quantitative.
Definition.com
Music is a field rather than a system because the referent is the body and the body passes into music.
Definition.com
Music is a 'sublime' art in that it relates to reality not by imitating it,(which it can't) but by rising above earthly passions into an ideal realm in order to move them.