Music as a purposeful expression?

I find that the value of music is dependent on the strenth of the emotions it provokes, seeing as my own subjective requirement of music is the provocation of emotional response. If attempts at music are made without being able to inspire strong feelings, or if I am unable to connect with the intended purpose/response of the sound - then that music to me is bad.

Here we can derive the purpose of music. The emotions that one particular piece of music represents identifies its purpose. Maybe this is where the definition lies - organized sound & language that somehow intrinsically owns, represents & insights undeniable emotions.

Can a chord be known as sad? Maybe through cultural separations or even just opposing perceptions in different minds society could disagree on the "sadness" or "happiness" of a single chord. In my opinion, the individual is capable of valuing the same chord as both sad & happy. Such a perception depends on one's own emotions prior to listening as well as the intentions of what one wants to hear.