In the "Main Title," the listener is immediately introduced to the End of Days score's intriguing piece of experimentation - an electronically manipulated boy soprano's voice. Later there are plenty of deviations from this opening idea, but as Big Arnie's soulful motif it's the most recurrent of all the musical material. This opening cue also sets a stylistic precedent for much of what follows. The atonal effect of breathing voices mixed with electronics and somber ensemble is akin to sound design. If it makes for long stretches of unnerving aural distraction, that's to John Debney's credit…