Someone was talking about a hebrew verse, and while I don't speak hebrew, I know what they're talking about. The tune is different, but maybe someone else could find that. The words basicaly sound like:

Ha shalom lay mahn ha ahmein
Ha ahmein lay mahn ha shalom

Sorry to anyone if I butchered that, I know that translated, these words can be sung to the same melody as above:

Peace shall be for all the world
All the world shall be for peace

This definetly works with all the rounds you guys have been talking about