"Let All Mortal Flesh Keep Silence" Dynamic vocals, harp, cello, violin, blast beats and new age synths! Enjoy a mysterious symphonic metal Christmas from LEAH in a live-style studio recording. Credits: Vocals, arrangements & VI: LEAH Drums: Sean Lang Bass: Jason Skilton Guitar: David Hughes Guitar: Levi Millar Keys & Synth: Jeff Caines Violin: Dan Huget Cello: Derek Usher Harp: Esther Cannon Artwork: Cameron Porter