I am willing to let differing opinions pass, so long as it's done respectfully.
But anyway I will drop it for the sake of all of us now getting along.
The dictionary definition of music stems from a time when the range of music was substantially limited, using such definitions to prove or disprove the categorization of what does and does not classify as music is shortsighted unless you dig in to the wording used.
If we expand upon a key point in the very defition you posted.
"1.vocal or instrumental sounds (or both) combined in such a way as to produce beauty of form, harmony, and expression of emotion."
We see that a large portion of what categorizes vocal, insutrumental of combined sounds as "music" is the listeners interpretation, and listeners the world over have categorically considered metal, techno, sceamo and every other genre, as "music", because those that willingly produce tracks of those genres, and those that buy the completed tracks either digitally or on cd, find an inherant beauty and expression of emotion in the recording.
Also, the way you are reacting to the notion of being lectured is worrying, as you seem blind to the realization that you have been lecturing others in this very thread.