Dave Matthews, Jackson Browne, Rufus Wainwright, and Sam Phillips with T-Bone Burnett will perform at the 20th anniversary Spirit of Liberty Awards dinner tomorrow (Dec. 11) in Beverly Hills, Calif.

Dave Matthews, Jackson Browne, Rufus Wainwright, and Sam Phillips with T-Bone Burnett will perform at the 20th anniversary Spirit of Liberty Awards dinner tomorrow (Dec. 11) in Beverly Hills, Calif. As previously reported, the event, sponsored by People for the American Way, "recognizes individuals who have made an outstanding contribution to the values of the American Way."

Neil Young will receive the Spirit of Liberty lifetime achievement award, while Trey Parker and Matt Stone ("South Park") and directors Kimberly Peirce ("Boys Don't Cry") and Kevin Smith ("Dogma") will receive Defender of Democracy awards. California congresswoman Nancy Pelosi will be presented with the Spirit of Liberty award. The event will be hosted by comedian Elayne Boosler. Actor Ben Affleck will be on hand to present.

"These individuals ... have taken public stands to support a free, open, and democratic society through their art and work, educating while entertaining, and courageously addressing today's most fundamental social and political issues," People for the American Way said in a statement.