Olivia Newton-John, Singer and Actress, Passes Away at 73

(CNN) -- Olivia Newton-John, the Australian singer whose breathy voice and wholesome beauty made her one of the biggest pop stars of the '70s and charmed generations of viewers in the blockbuster movie Grease, died on Monday, according to a statement from her husband. She was 73.

"Dame Olivia Newton-John passed away peacefully at her Ranch in Southern California this morning, surrounded by family and friends. We ask that everyone please respect the family's privacy during this very difficult time," her husband, John Easterling, wrote in a statement on the singer's verified Instagram account. "Olivia has been a symbol of triumphs and hope for over 30 years sharing her journey with breast cancer."

The singer revealed in September 2018 that she was treating cancer at the base of her spine. It was her third cancer diagnosis, following bouts with breast cancer in the early '90s and in 2017.

Her rise to fame

Thanks to a string of country and soft-rock hits, Newton-John was already a popular singer by the late 1970s. But her co-starring role opposite John Travolta in 1978's Grease, arguably the most popular movie musical of all time, lifted her to a new level of stardom.

Although she had little acting experience (and turned 29 during filming), Newton-John gave an indelible performance as Sandy, a sweet-natured Australian transfer student who romances Travolta's alpha greaser Danny at a Southern California high school in the 1950s.

Their onscreen chemistry as mismatched lovebirds who undergo final-act makeovers to win each others' hearts -- she ditches her frilly dresses for heels, leather, spandex and a cigarette -- anchored the movie and inspired repeat viewings by legions of fans.

"I don't think anyone could have imagined a movie would go on almost 40 years and would still be popular and people would still be talking to me about it all the time and loving it," Newton-John told CNN in 2017. "It's just one of those movies. I'm very lucky to have been a part of it. It's given so many people pleasure."

Newton-John sang on three of the movie's biggest hits: the duets "You're The One That I Want" and "Summer Nights" with Travolta, and her swoony solo ballad, "Hopelessly Devoted To You."

Born in Cambridge, England in 1948, Newton-John moved with her family to Melbourne, Australia, when she was five. After winning a talent contest on a TV show, Sing, Sing, Sing, as a teen she formed an all-girl group and began appearing on weekly pop music programs in Australia.

Newton-John recorded her first single in England in 1966 and scored a few international hits, but she remained largely unknown to US audiences until 1973, when "Let Be There" became a top-10 hit on both the adult contemporary and the country charts.

A series of No. 1 easy-listening hits followed, including "I Honestly Love You," "Have You Never Been Mellow" and "Please Mr. Please."

Then came Grease, which was 1978's top-grossing movie and became an enduring cultural phenomenon.

The movie gave Newton-John an opportunity to change her squeaky-clean image. The cover of her next album, "Totally Hot," featured the singer in black leather, while its songs had an edgier, more contemporary pop sound.

"Physical"

In 1981, she took her new, sexier persona a step further with "Physical," a dance number with such suggestive lyrics as, "There's nothing left to talk about unless it's horizontally." Banned by several radio stations, it became her biggest hit, spending 10 weeks atop the Billboard Hot 100.

She also appeared in several more big-budget movies, including the musical fantasy Xanadu with Hollywood legend Gene Kelly in his final screen role. The film bombed, but its soundtrack sold well and spawned "Magic," a No. 1 hit.

In 1983 she teamed with Travolta again for Two of a Kind, a romantic comedy-fantasy, but it failed to recapture their Grease spark.

Over a lengthy career, Newton-John won four Grammy Awards and sold more than 100 million albums.

"I've had many lives in music. I've had country when I started, then I crossed over into pop," she told CNN. "I had Xanadu and Grease, many songs in between. I feel very grateful. I have such a large repertoire to choose from."

Overcoming tragedy

But Newton-John also faced her share of troubles and tragedy. Her breast cancer diagnosis forced her to postpone and cancel several tours.

And in 2005 Newton-John's then-boyfriend, Patrick McDermott, disappeared at sea while on a fishing trip off the coast of California. He was never found -- an unsolved mystery that haunted the singer for years.

"It's very hard to live with that," she told CNN's Larry King in 2006. "It's probably the hardest thing I've ever experienced, and I've been through a lot of things." Although her career profile dimmed in her later years, Newton-John never stopped recording and performing. Among her highlights were guest appearances on Glee, a long-running "Summer Nights" residency at the Flamingo Las Vegas and a dance-club hit, "You Have to Believe," recorded with daughter Chloe.

"I love to sing, it's all I know how to do," she told CNN in 2017. "That's all I've ever done since I was 15, so it's my life. I feel very grateful that I can still do it and people still come to see me."

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