The word "vocal" triggers my mind to think of singing. I quite enjoy listening to a performer with a pleasant voice singing in a style that I normally associate with. When I'm in my car listening to the radio, I might even be inclined to sing along.
Then (maybe after hearing myself sing) I think of all those who have no business singing with-in a 50 foot radius of another living being.
So the sketch here is representative of the later rather than the former, as I thought it would be more entertaining. If I get the chance to, I may rework the composition and actually paint it.