WNT(i)
2 And I heard music from Heaven which resembled the sound of many waters and the roar of loud thunder; and the music which I heard was like that of harpists playing upon their harps.
3 And they were singing what seemed to be a new song, in front of the throne and in the presence of the four living creatures and the Elders; and no one was able to learn that song except the 144,000 people who had been redeemed out of the world.