How Will I Know - Pentatonix (Whitney Houston Tribute) Maya Rudolph -- National Anthem. "Bogoroditse Devo" from Rachmaninov Vespers. Eric Whitacre - Eric Whitacre's Virtual Choir 2.0, 'Sleep'. Eric Whitacre's Virtual Choir - 'Lux Aurumque'. Ubi Caritas by the Cambridge Singers.
Hark, I Hear the Harps Eternal - Alice Parker - Biola University Chorale. Groove - Victor Wooten.