Sometime during the Second Age Sauron gave nine Rings of Power to powerful mortal Men. For many years the bearers used the rings to gain great wealth, prestige and power, becoming "mighty in their day, kings, sorcerers, and warriors of old". The effect of the rings caused their lives to be prolonged, and to see things of the Unseen. But over time their bodily forms faded until they became wraiths entirely, slaves under the domination of Sauron's One Ring.
The Wraiths of Angmar are a Lord of the Rings death metal tribute band that pose as the Nazgul, Sauron's most fearsome allies.