Donna Summer performing during UNICEF benefit in New York City on January 9, 1979.

Associated Press

Disco singing star Donna Summer, center, tries to quiet the audience for Betty Ford at a disco-party, Beverly Hills, Thursday, Nov. 2, 1979 benefit for the Betty Ford Cancer. Former President Gerald Ford, his wife Betty and Ms. Summer were among nearly 1,000 persons attending the $500-a-couple dinner and dance at the Beverly Hilton benefiting the cancer research canter of the Cedars-Sinai Medical Center.

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In this Aug. 11, 1979 file photo, singer Donna Summer swings the skirt of her leopard-print dress during her concert at the Universal Amphitheater in Los Angeles, Calif. Summer, the Queen of Disco who ruled the dance floors with anthems like ìLast Dance, î ìLove to Love You Babyî and ìBad Girl, î has died. Her family announced her death in a statement Thursday, May 17, 2012. She was 63.

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Donna Summer performs during the season finale of American Idol on Wednesday May 21, 2008, in Los Angeles.

Associated Press

America pop singer Donna Summer, who won international fame for her sexy interpretation of pop songs, gestures during a recent news conference in Rome, October 13, 1977, where she was scheduled to give a concert.

Associated Press

Gerald and Betty Ford, left, greet disco star Donna Summer, right, and Cedars-Sinai Medical Center board chairman Steve Broidy at a reception prior to gala disco party benefit, Thursday, Nov. 2, 1979 at the Beverly Hills. Approximately 1000 persons paid $500 a couple for the dinner-and-dance party, to benefit the Betty Ford Cancer Center at the medical center.

Associated Press

Singer Donna Summer, holding her Grammy, is embraced by composer Paul Jabara at the 21st annual Grammy Awards in Los Angeles, Ca., Feb. 15, 1979. Summer won top female rhythm and blues performer for "Last Dance" written by Jabara, who also won a Grammy for the same song for best instrumental composition.

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In this June 16, 2004 file photo, Donna Summer appears at an event in London. Summer, the Queen of Disco who ruled the dance floors with anthems like ìLast Dance, î ìLove to Love You Babyî and ìBad Girl, î has died. Her family released a statement, saying Summer died Thursday, May 17, 2012. She was 63.

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Singer Donna Summer, left, and Bette Midler pose for photographers before attending Midler's sixth annual "Hulaween" event to benefit the New York Restoration Project in New York, Wednesday, Oct. 29, 2003. The New York Restoration Project was founded by Midler in 1995 and is devoted to revitalizing and developing parks and community gardens.

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In this Dec. 11, 1977 file photo, Donna Summer holds her award at the Billboard Number 1 Music Awards in Santa Monica, Calif. Summer, the Queen of Disco who ruled the dance floors with anthems like ìLast Dance, î ìLove to Love You Babyî and ìBad Girl, î has died. Her family released a statement, saying Summer died Thursday, May 17, 2012. She was 63.

Associated Press

Singer Donna Summer poses with three awards she won at the American Music Awards in Los Angeles, Ca., Jan. 12, 1979. Summer won for favorite female vocalist; favorite single record, "Last Dance"; and favorite album "Live and More" in a newly-created disco category.

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In this Nov. 2, 1979 file photo, Gerald and Betty Ford, left, Donna Summer, right, and Cedars-Sinai Medical Center board chairman Steve Broidy at a reception prior to gala disco party benefit in Beverly Hills, Calif. Summer, the Queen of Disco who ruled the dance floors with anthems like ìLast Dance, î ìLove to Love You Babyî and ìBad Girl, î has died. Her family released a statement, saying Summer died Thursday, May 17, 2012. She was 63.

Associated Press

In this Oct. 21, 1977 file photo, Donna Summer, 27, arrives at Heathrow Airport from Paris. Summer, the Queen of Disco who ruled the dance floors with anthems like ìLast Dance, î ìLove to Love You Babyî and ìBad Girl, î has died. Her family released a statement, saying Summer died Thursday, May 17, 2012. She was 63.

Associated Press

Singer Donna Summer poses with her award at the American Music Awards in Los Angeles, Ca., Jan. 18, 1980. Summer was named favorite female vocalist in both pop and soul categories, and her rendition of "Bad Girls" was named favorite pop single.

Associated Press

Vice President Al Gore declines to sing when offered the chance by singer Donna Summer, far right, at a fundraiser in Nashville, Tenn., on Wednesday, Dec. 15, 1999. Joining Gore and Summer are singers Lindsay Ridgeway, second from left, and Shane Minor.

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Syesha Mercado, left, and Donna Summer are seen onstage during the season finale of American Idol on Wednesday May 21, 2008, in Los Angeles.

Associated Press

US singer Donna Summer performs at the Nobel Peace Prize concert in Oslo, Norway Friday, Dec. 11, 2009. Artists from all over the world gathered at the Oslo Spektrum to help spread the message of peace and celebrate this year's Nobel Peace Prize laureate, President Barack Obama.

Associated Press