Half of the reason I opened the email that included this track was the name "PANG!" I don't know if it's the way the name just bounces off of the tongue, or the exclamation point, but it got my attention. And I'm glad it did, because this track is way too dope!
It almost sounds like the vocals are sampled from Christina Aguilera's "What A Girl Wants." (Listen around 0:36.) With the vocals pitched and processed, it's a bit hard to tell, but they are very reminiscent of her voice.