i think they fit the stages, but not quite as exciting as music for a fighting game should be, in MK9 it seems far more reminiscent of MK2 in a sense that the music is more atmospherical and eerie, but i think if it kicked you in the face as quickly and awesomely as the music in MK3 did then it'd be perfect
I always wondered what was with the clenched teeth too with everyone. I have never seen fighters before that their teeth were all clenched in anger before a fight. It looks rediculous.