Associated Press

Donna Summer held her award at the Billboard Number 1 Music Awards in Santa Monica in 1997.

Associated Press

Summer swirled the skirt of her leopard-print dress during her concert at the Universal Amphitheater in Los Angeles in 1979.

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In November 1979, Gerald and Betty Ford, left, Cedars-Sinai Medical Center board chairman Steve Broidy, and Donna Summer attended a reception prior to a disco party benefit in Beverly Hills.

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Summer performed with Earth, Wind and Fire during the 13th annual Race to Erase MS gala in Century City, Calif., in 2007.

Kevork Djansezian/Associated Press/file

Summer performed during the "American Idol" finale at the Nokia Theatre in Los Angeles on May 21, 2008.

MARC MUELLER/AFP/Getty Images

In July 2009, Summer performed on stage in Berlin.

Bjorn Sigurdson/AFP/Getty Images

Summer performed during the Nobel Peace Prize Concert in Oslo Spektrum in December 2009.

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Summer at NBC's Today Show Summer Concert Series in New York in May 2008.