Alicia Keys has announced that she will make a guest appearance on NBC's singing competition, "The Voice."

The singer confirmed the news via Twitter, revealing that she will be a mentor for Pharrell Williams' team.

Keys is the latest mentor to be announced.

NBC previously revealed that country group Little Big Town will mentor Blake Shelton's team; Bush front man Gavin Rossdale will mentor the team of his wife, Gwen Stefani; and legendary Fleetwood Mac singer Stevie Nicks will mentor Adam Levine's team.

"The Voice" kicks off its seventh season at 8 p.m. Sept. 22 on NBC.

Source: The Touch Radio