Monks from the Cistercian monastery of Heiligenkreuz - a 12th century monastery just outside Vienna have secured a lucrative recording contract with Universal Music to record Gregorian Plainchant. Universal Executive Tom Lewis credits Halo3 for the resurgence of interest in plainchant.

Here's the article on Yahoo News.

Rather interesting. Halo3 won a number of awards for their sound, including best use of surround sound.