Great animation, great story, but...
Was it really necessary to include that "Death-Kill" bit? All it does is further expand upon the general stereotype that "Jazz musicians hate metal"..
I myself am against this sort of prejudice. I practice ALL styles of music, anything from Samba to Bebop, Thrash to Avant-Garde, Heavy Metal to Baroque. I absolutely LOVE music, and have dedicated my life to exploring and utilizing it to my fullest extent.
I understand the overall relevance of adding "Death-Kill" into your animation, but surely you're not suggesting that "metal-heads are poor musicians", right? =)
Just a thought. And once again, great work.