As the White House has previously announced, Justin Timberlake (who will be making his White House debut), Al Green, Ben Harper, Queen Latifah, Cyndi Lauper, Joshua Ledet, Sam Moore, Charlie Musselwhite, Mavis Staples, and others will be performing at the exclusive event.

But while the performers are known, the guest list for the private event has not yet been released. 

One imagines it's a tough ticket to come by. To attend any event at the White House, one must be invited. (The White House is now closed for public access by members of the general public.) And especially this one, with Hollywood and musical stars--and with remarks by the president of the United States.

A White House official did not immediately respond when asked for a guest list of tonight's event.