Brand will join Coldplay, Mumford & Sons, Jon Stewart at Amnesty International benefit.

Russell Brand is set to make his first public appearance since filing for divorce from Katy Perry when he takes the stage at New York's Radio City Music Hall as part of an Amnesty International benefit.

Brand will perform alongside Coldplay, Mumford & Sons, Jon Stewart, Stephen Colbert, Reggie Watts and others at Amnesty International's Secret Policeman's Ball, a long-running celebration of free speech and comedy, set for March 4 at the venerable NYC venue.

The event marks the first time the ball has been held in the U.S. and also is Brand's first scheduled appearance since he and Perry split in December; the "California Gurls" hitmaker has already made a pair of public appearances, first filming an Adidas commercial earlier this month and then returning to the stage for a concert in Jakarta, Indonesia.