Dixie Chicks

Natalie Maines of the Dixie Chicks takes part in a concert on Oct. 11, 2004, in Washington. Maines says she was the target of a "scary" death threat in the summer of 2003, after she criticized President Bush during a London concert. She says in an interview on CBS' "60 Minutes" to air Sunday, May 14, 2006, "It was somebody who obviously thought they had a plan."

The Dixie Chicks arrive at a dinner to celebrate Time 100, Time Magazine's list of the 100 most influential people in the world, on May 8, 2006, in New York.

The Dixie Chicks perform live on stage at The Point Theatre in Dublin, Ireland, on Sept. 18, 2003.

Born In The USA — AP Photo/Vote for Change

Rock superstar Bruce Springsteen, center, is pictured with other recording artists who made up the "Vote for Change" program in this photo released Aug. 3, 2004. Members of the group performed in a series of fund-raising concerts in nine swing states before the presidential election in an effort to unseat President George W. Bush. Included in the group, seated front left, is Martie Maguire of the Dixie Chicks.

Natalie Maines, left, and Emily Robinson of the Dixie Chicks attend the 2004 Rock the Vote Awards in Hollywood on Feb. 7, 2004.

Natalie Maines, lead singer of the Dixie Chicks, speaks to the audience after receiving the award for "The Big Quote 2003" for her negative comments against President Bush and the Iraq war during taping of "VH1 Big in 2003" awards ceremony on Nov. 20, 2003, at the Universal Amphitheater, in Universal City, Calif. Holding the award is presenter Bill Maher.

The Dixie Chicks perform at the Frank Erwin Center in Austin, Texas, on May 21, 2003. From left are Emily Robison, Natalie Maines and Martie Maguire. Part of the group's performance was shown at the Academy of Country Music Awards in Las Vegas.

Natalie Maines of the Dixie Chicks addresses the audience during the group's show at the Frank Erwin Center in Austin, Texas, on May 21, 2003. The Dixie Chicks performed via satellite for the Academy of Country Music Awards from Austin.

The Dixie Chicks, from left, Emily Robison, Natalie Maines and Martie Seidel, perform the song "Landslide" at the 45th Annual Grammy Awards on Feb. 23, 2003, at Madison Square Garden in New York.

Singer Emily Robison of the Dixie Chicks arrives for the ACLU of Southern California's Annual Bill of Rights Awards Dinner at the Regent Beverly Wilshire Hotel in Beverly Hills, Calif., on Dec. 15, 2003.

Emily Robison, left, Natalie Maines, center and Martie Seidel, of the Dixie Chicks hold their awards at the 42nd Grammy Awards at the Staples Center in Los Angeles on Feb 23. 2000.

The Dixie Chicks receive their award for the Best Country Album during the 41st Grammy Awards at the Shrine Auditorium in Los Angeles on Feb. 24, 1999.