It is being described as the least predictable music success of the year.
Currently outselling Madonna and Amy Winehouse in Britain, it has risen to number seven on the British pop charts: an album of Gregorian chants by Austrian monks.
Called Chant Music for Paradise, it was released in New Zealand today.
Some of their chants are 900 years old, and the monks themselves are devout, unworldly, and completely out of touch with modern music, which is why the music they make is so wonderfully different.