Your view on evolution is based on religious doctrines, not on scientific findings.

At the perfect moment, Romero fired into the barrel, leaving the monster in a bloody pile of gibs

This musick mads me, let it sound no more.

But musical ancestry aside, the influence to which Bieber is most beholden is the current trends in pop music, which means Believe is loaded up with EDM accouterments, seeking a comfortable middle ground where Bieber’s impressively refined pop-R&B croon can rub up on techno blasts and garish dubstep drops (and occasionally grind on some AutoTune, not necessarily because it needs it, but because a certain amount of robo-voice is expected these days).