"Women Who Rock"
Billie Holiday
"Women Who Rock" category: "Sufragettes to Juke-Joints: The Foremothers/Roots of Rock"
Photo: Billie Holiday poses in a May 20, 1947, photo.
"Women Who Rock" category: "Get Outts That Kitchen, Rattle Those Pots and Pans: Rock and Roll Emerges"
Photo: Wanda Jackson performs onstage during 2011 Stagecoach: California's Country Music Festival on May 1, 2011, in Indio, Calif.
"Women Who Rock" category: "Get Outts That Kitchen, Rattle Those Pots and Pans: Rock and Roll Emerges"
Photo: Brenda Lee poses in a 2002 photo.
"Women Who Rock" category: "Will You Love Me Tomorrow: The Early 1960s/Girl Groups"
Photo: From left, Estelle Bennett, Ronnie Bennett and Nedra Talley of The Ronettes perform on May 26, 1966.
"Women Who Rock" category: "Will You Love Me Tomorrow: The Early 1960s/Girl Groups"
Photo: Mary Wilson, Diana Ross and Florence Ballard of The Supremes perform on June 1, 1964.
"Women Who Rock" category: "Will You Love Me Tomorrow: The Early 1960s/Girl Groups"
Photo: Carole King poses for photographers on June 14, 1989.
"Women Who Rock" category: "Revolution, Counterculture and The Pill: The Late 1960s"
Photo: Aretha Franklin at a recording session for her 1962 album, "Laughing on the Outside."
"Women Who Rock" category: "Revolution, the Counterculture and The Pill: The Late 1960s"
Photo: Janis Joplin performs in an undated photo.
"Women Who Rock" category: "Revolution, the Counterculture and The Pill: The Late 1960s"
Photo: Joni Mitchell in a 1995 photo.
"Women Who Rock" category: "Revolution, the Counterculture and The Pill: The Late 1960s"
Photo: Tina Turner performs live on stage in London in 1980.
"Women Who Rock" category: "I Will Survive: The 1970s - Rockers to Disco Divas"
Photo: Joan Jett performs with her band Joan Jett and the Blackhearts during the 2007 International Consumer Electronics Show Jan. 9, 2007, in Las Vegas.
"Women Who Rock" category: "I Will Survive: The 1970s - Rockers to Disco Divas"
Photo: Cher poses in the press room at the MTV Video Music Awards on Sept. 12, 2010, in Los Angeles.
"Women Who Rock" category: "I Will Survive: The 1970s - Rockers to Disco Divas"
Photo: Stevie Nicks performs on stage on Dec. 7, 2009, in Sydney, Australia.
"Women Who Rock" category: "Dance This Mess Around: Punk and Post Punk"
Photo: Debbie Harry attends The Gentleman's Ball hosted by GQ Magazine at the Edison Ballroom on Wednesday, Oct. 27, 2010, in New York.
"Women Who Rock" category: "Dance This Mess Around: Punk and Post Punk"
Photo: Patti Smith performs at the Byblos International Festival in the ancient city of Byblos, north of Lebanon, July 8, 2008.
"Women Who Rock" category: "Dance This Mess Around: Punk and Post Punk"
Photo: Yoko Ono arrives at the New York Premiere of "A Film Unfinished," Wednesday, Aug. 11, 2010.
"Women Who Rock" category: "Causing a Commotion: Madonna and the Pop Explosion"
Photo: Madonna performing on her "Blonde Ambition" tour, July 18, 1990.
"Women Who Rock" category: "Causing a Commotion: Madonna and the Pop Explosion"
Photo: Cyndi Lauper poses in a 1987 photo.
"Women Who Rock" category: "Causing a Commotion: Madonna and the Pop Explosion"
Photo: Janet Jackson performs during the "American Idol" finale on May 26, 2010, in Los Angeles.
"Women Who Rock" category: "Causing a Commotion: Madonna and the Pop Explosion"
Photo: Britney Spears performs on ABC's "Good Morning America" in San Francisco on Sunday, March 27, 2011.
"Women Who Rock" category: "Ladies First: The '90s and the New Millennium"
Photo: Lady Gaga performs for Canal+ on the Croisette during the 64th Annual Cannes Film Festival on May 11, 2011, in Cannes, France.
"Women Who Rock" category: "Ladies First: The '90s and the New Millennium"
Photo: Taylor Swift arrives at the 46th Annual Academy of Country Music Awards on April 3, 2011, in Las Vegas.
"Women Who Rock" category: "Ladies First: The '90s and the New Millennium"
Photo: Janelle Monae arrives at the 53rd annual Grammy Awards on Feb. 13, 2011, in Los Angeles.
"Women Who Rock" category: "Ladies First: The '90s and the New Millennium"
Photo: Liz Phair performs her album "Exile in Guyville" on Aug. 28, 2008, in Washington.
"Women Who Rock" category: "Ladies First: The '90s and the New Millennium"
Photo: Rihanna performs during the 2011 NBA All-Star game halftime show at Staples Center on Feb. 20, 2011, in Los Angeles.