Singer Donna Summer performs during the David Foster and Friends concert at the Mandalay Bay Events Center October 1, 2011 in Las Vegas, Nevada. (Photo by Ethan Miller/Getty Images)
Donna Summer 1948-2012
Donna Summer performs at the Nobel Peace Prize Concert at Oslo Spektrum on December 11, 2009 in Oslo, Norway. (Photo by Chris Jackson/Getty Images)
Donna Summer 1948-2012
Donna Summer sings God Bless America in the seventh inning stretch of game two of the World Series between the Boston Red Sox and the St. Louis Cardinals on October 24, 2004 at Fenway Park in Boston, Massachusetts. (Photo by Elsa/Getty Images)
Donna Summer 1948-2012
Donna Summer performs during rehearsals for the VH1 Save The Music Foundation benefit concert at the Beacon Theater April 10, 2005 in New York City. (Photo by Scott Gries/Getty Images)
Donna Summer 1948-2012
Singer Donna Summer performs at "Save The Music: A Concert To Benefit The VH1 Save The Music Foundation" at the Beacon Theater April 11, 2005 in New York City. (Photo by Scott Gries/Getty Images)
Donna Summer 1948-2012
Donna Summer on stage at the 14th Annual Race To Erase MS "Dance to Erase MS" charity event at the Hyatt Regency Century Plaza on April 13,2006 in Century City, California. (credit: Frazer Harrison/Getty Images Entertainment)
Donna Summer 1948-2012
Donna Summer poses in the press room during the American Idol Season 7 Grand Finale held at the Nokia Theatre on May 21, 2008 in Los Angeles, California. (credit: Kevin Winter/Getty Images Entertainment)
Donna Summer 1948-2012
Singer Donna Summer performs on NBC's "Today Show" in Rockefeller Plaza on May 30, 2008 in New York City. (Photo by Stephen Lovekin/Getty Images)
Donna Summer 1948-2012
Donna Summer performs during the Nobel Peace Prize Concert Rehearsals at Oslo Spektrum on December 10, 2009 in Oslo, Norway. (Photo by Sandy Young/Getty Images for Nobel Peace Prize)
Donna Summer 1948-2012
Will Smith and Donna Summer sing on stage at the Nobel Peace Prize Concert at Oslo Spektrum on December 11, 2009 in Oslo, Norway. (credit: Chris Jackson/Getty Images Entertainment)
Donna Summer 1948-2012
Donna Summer performs at the Nobel Peace Prize Concert at Oslo Spektrum on December 11, 2009 in Oslo, Norway. (credit: Chris Jackson/Getty Images Entertainment).
Donna Summer 1948-2012
Donna Summer performs at the Nobel Peace Prize Concert at Oslo Spektrum on December 11, 2009 in Oslo, Norway. (credit: Chris Jackson/Getty Images Entertainment).
Donna Summer 1948-2012
Donna Summer arrives at the Louis Vuitton Bond Street Maison launch on New Bond Street on May 25, 2010 in London, England. (Photo by Samir Hussein/Getty Images)
Donna Summer 1948-2012
Singer Donna Summer performs during the 25th Great Sports Legends Dinner to benefit The Buoniconti Fund to Cure Paralysis at The Waldorf=Astoria on September 27, 2010 in New York City. (credit: Thos Robinson/Getty Images Entertainment)
Donna Summer 1948-2012
Singer Donna Summer performs during the 25th Great Sports Legends Dinner to benefit The Buoniconti Fund to Cure Paralysis at The Waldorf=Astoria on September 27, 2010 in New York City. (credit: Bryan Bedder/Getty Images Entertainment).
Donna Summer 1948-2012
Singer Donna Summer performs during the David Foster and Friends concert at the Mandalay Bay Events Center October 15, 2010 in Las Vegas, Nevada. (Photo by Ethan Miller/Getty Images)
Donna Summer 1948-2012
Singer Donna Summer performs onstage during the 'Great Performances: Hitman Returns - David Foster & Friends' panel at the PBS portion of the 2011 Winter TCA press tour held at the Langham Hotel on January 9, 2011 in Pasadena, California. (Photo by Frederick M. Brown/Getty Images)
Donna Summer 1948-2012
Donna Summer performs during the David Foster and Friends concert at the Mandalay Bay Events Center October 1, 2011 in Las Vegas, Nevada. (credit: Ethan Miller/Getty Images Entertainment)