Halo Theme Song in a BIG Echo Chapel | Halo Campaign Evolved OST Tribute (by Munx Gregoriana)

To celebrate the release of Halo Infinite we had a little singing session with real Gregorian Style Vocal Ensemble in a Chapel! Munx Gregoriana's Youtube channel:    / @munxgregoriana   , go and support them! :) Munx Gregoriana sings Wow; WotLK - Main Theme:    • WoW Invincible - A Cappella in Church (+ C...   Halo Theme Song Composition: Martin O'Donnell Arrangement: William Häggblom Munx Gregoriana Joonas Pajari William Häggblom Tuomas Tenkanen Johan Krogius(Only in the Audio) Video Crew: Dop: Tuomas Tenkanen 1st AC: Anna-Maria Vikstén Editing: Tuomas Tenkanen Color Grading: Tuomas Tenkanen Audio Recording & Mixing: William Häggblom Audio Mastering: Markus Kärki Production: Munx Gregoriana Big Thanks to Helsinki Cathedral Suomenlinna Church