“Arp Angels,” the second single from Discovery Zone’s Library Copy Do Not Remove, begins with an ominous tension and the approach of something cyber, divine and mercurial. Synths sparkle over bass frequencies, heralding the arrival of celestial beings, or synthetic angels liberated from the need of body or form. Mysterious, powerful and slightly uncanny, these benevolent creatures invite you to see into a different dimension, the one that holds the master files. Sounds layer on top of each other, glimmering high to simulated heaven and resonating low into computerized earth. Full of multiplicity and movement, this track seems to trace the trail of code left behind by digital angel wings. We receive them with awe as they dance before us and follow their flight as they soar out of view, back behind the cyber pearly gates that mark their realm.