I'll need a few more listens to grasp the measure of Darcy James Argue's new big-band piece, Real Enemies, but my first impression—gleaned from its premiere at BAM's Next Wave Festival, in Brooklyn, Wednesday night—is that it's a remarkable work, maybe an oddball masterpiece: riveting, head-spinning, at once spooky and witty, abstrusely complex and foot-tappingly propulsive.