DONNA SUMMER | 1948-2012 The queen of disco, dead at 63

Into her 60s, she still worked hard for the money. In fact, in 2008, Donna Summer had a No. 1 dance hit with “I’m a Fire.” That meant she, along with Cher, had scored a No. 1 in each of the last four decades. Only Madonna has charted more dance hits than Summer.

But the record stops there: She died Thursday at age 63 after a battle with cancer.

Her family released a statement, saying that they “are at peace celebrating her extraordinary life and her continued legacy.” Ms. Summer had been living in Englewood, Fla., with her husband, Bruce Sudano.

The five-time Grammy winner sold more than 130 million albums and contributed, as much as the success of the Bee Gees, to making disco wildly popular in the 1970s with hits such as “Could It Be Magic,” “Love to Love You Baby,” “I Feel Love,” “Bad Girls,” “Last Dance” and the No. 1 hit “Hot Stuff.”

She has a place in Chicago radio history. When the radio station then known as WDAI-FM (94.7) ended its all-disco format in the wake of the late 1970s anti-disco backlash, it did so by playing her “Last Dance” over and over and over — nonstop, without commercials or any announcers to interrupt it through an all-“last Dance” on the air weekend.

Her title as “Queen of Disco” wasn’t mere marketing. Her success continued well past disco and into the ’80s, with more Top 10 hits — “Love Is in Control (Finger on the Trigger),” “She Works Hard for the Money,” “This Time I Know It’s for Real” — that expanded on her cooing, sultry sexiness.

But the singer wasn’t always comfortable with her sexy image, cemented by the hit “Love to Love You Baby,” on which she cooed orgasmically. She came up with the idea of the song and first recorded it as a demo in 1975, on the condition that another singer perform it commercially. But Casablanca Records president Neil Bogart liked the track so much that he suggested to influential producer Giorgio Moroder they re-record it, and make it longer — what would come to be known as a “disco disc.”

She had reservations about the lyrics — “do it to me again and again” — but imagined herself as a movie star playing a part. Solo and multitracked, she whispered, she groaned, she crooned. Drums, bass, strings and keyboards answered her cries. She simulated climax so many times that the BBC kept count: 23, in 17 minutes.

In 2009, she told the Sun-times that she relished her current ballad-focused music because “there’s no longer such an emphasis on the sex part.”

“It wasn’t ever really me,” she said. “That’s what was working in the recording industry at the time. If I had to do it all again, I would probably insist ‘Last Dance’ should be my first song. Instead, I have ‘Love to Love You Baby.’ It was all a bit of a challenge to overcome. It’s almost like I had to prove I was a singer all over again.”

She had released her last album, “Crayons,” in 2008, her first full studio album in 17 years. She also performed on “American Idol” that year.

The new music managed to regain some of her former glitter — but without going the standards-and-songbook route of peers.

“When my record com- pany came to me about two years ago, they wanted me to do oldies, what Rod Stewart was doing,” Ms. Summer said in 2008. “They said, ‘We don’t know if we could get you into the mainstream market anymore.’ That was a valid point, but I didn’t feel it was necessarily the truth.”

Still, her disco tracks from the ’70s gave electronic music its first significant foothold on the pop charts. After years of disco hits full of slashing string sections, her “I Feel Love” was the first major hit song featuring a backing track that was entirely synthesized. In its swirling drone, one can hear the fountainhead of a lot of contemporary dance music. Likewise, the fluid hum of “Love to Love You Baby” was later sampled by Beyonce (“Naughty Girls”) and others.

Born Ladonna Adrian Gaines, Ms. Summer was raised in Boston by devout parents; she returned to those roots later in the ’80s, announcing she had become a born-again Christian and winning a gospel Grammy for “Forgive Me.”

She is survived by her husband and their daughters Brooklyn and Amanda, as well as her daughter Mimi from her first marriage.