The guy is black, but where did the "gangsta cool guy" part come from? He could be a dork, nerd/boffin for all we know. Are all black males automatically "gangsta cool guys" from birth? ***, I'm jealous.
Second, there are actually plenty of "black gangsta cool guys" who were legendary pianists. Have you heard of Bud Powell, Art Tatum, Thelonious Monk, Oscar Peterson? True gangstas and truly amazing artists. They were black pianists who took the piano pretty seriously. They played jazz music, but that doesn't mean they produced music any less serious or profound than Beethoven or Rachmaninov (and that's not some political correctness-fueled exaggeration).
I think that "black person" comment was a typo: he simply meant "*."
You are definetly right, i think 'black gangsta cool guy" is basically a stereotype that society has placed upon Black males, but you mainly see this in movies, police brutality vidoes,etc.
But i am no where near a dork,nerd, or boffin(what the hell is a boffin,lol), and i wouldnt classify myself a "gangsta",but i could act like one if i was provoked,but mainly i wouldn't becuz i dont carry myself in that kind of manner, but i am cool guy

,lol.
But i know 6th 4 didnt mean anything by it,thats why i found it funny.
And i've heard of Art Tatum and Bud Powell but not those other two, i'll be sure to look into them.And yeah i changed my mistake, i had to make it plural becuz it wudnt let me use the other word.