When this song started I knew I was in for something special. Playing at pretty much the beginning of the game, it set the tone for a strategy game that was so emotional and story focused, it has imho since turned into a true classic.

Barber composed this piece for strings in the 1930s and turned it into the vocal "Agnus Dei" in the 1960s. The Homeworld version is iirc performed faster than originally written but works really well, especially within the game.

See a gameplay video here: https://m.youtube.com/watch?v=xtoDkda9Aio