That’s the Angel City Chorale bringing down the house on America’s Got Talent. They are indeed talented, but their choice of song obviously helped showcase their amazing sound. Christopher Tin’s Baba Yetu, originally written as Civilization IV’s theme song, remains a powerful, beautiful piece of music. The Lord’s Prayer in Swahili seems to transcend language. It deservedly won a Grammy in 2011. You can check out the version used in-game here, or the re-release from Tin’s album, Calling All Dawns.