The 2012 London Olympics are not quite halfway completed, so I bet there are many participants who are making sure they are saying their prayers. Well, I would believe there are a certain number of athletes in the London Olympic Village who will be singing "Amazing Grace" by this point in the competition, either in a group, or quietly to themselves. They wish they could sound as good as Nhojj on this version.
You can purchase "Amazing Grace" on BandCamp, Amazon or iTunes. I think many of them might also be singing "Wade In The Water", and not just eh swimmers. The song is a great spiritual, first published at the turn of the 20th century, in 1901. Listen to the beautiful version recorded by Nhojj.
"Wade In The Water" is off the album I've Been Waiting For You. You can purchase the single or the album on iTunes and Amazon. You can find more about Nhojj at his official website.