With echoing, Gaelic undertones, this hymns project owes its simplicity to Audrey Assad’s Plymouth Brethren roots (where voices were the only instrumentation), and its liturgy to her current Catholic faith. Drums on the otherwise stark “Be Thou My Vision” prove a welcome surprise, while Assad’s “I Wonder as I Wander” conjures earthy images of faraway forests. “Even Unto Death,” penned with pal Matt Maher, is fragile and fearless, and her dewy version of “Holy, Holy, Holy” breathes new life into old lyrics.