Celine Dion 'Shaken' By Death of 'Titanic' Composer James Horner

Celine Dion owes a lot to James Horner after the success of their Titanic song, "My Heart Will Go On." On Tuesday, she paid her respects to the Oscar-winning composer after it was revealed that he passed away in a tragic plane crash at age 61.

"Shaken by the tragic death of James Horner," the 47-year-old singer tweeted along with photos of herself and her husband Rene Angelil posing with Horner. "We send our prayers and deepest condolences to his family and friends."

In the late '90s, Horner and Dion won big for their hit song off the Titanic soundtrack. At the 1999 GRAMMYs, the track got Record of the Year, Song of the Year and Dion won for Best Female Pop Vocal Performance. At the 1998 Oscars, Horner won for Best Original Song and Best Original Dramatic Score for his work on the movie's music. 

PHOTOS: Stars We've Lost

Hollywood has been in mourning ever since news broke of Horner's sudden passing.

From director Ron Howard to actress Kirstie Alley, numerous stars have taken to social media to offer their condolences.

"I'm so sad to hear about James Horner. He scored the first movie I did, Star Trek 2. Great composer, great person, huge loss," Alley tweeted. "RIP JAMES Horner."

Pop star Leona Lewis performed Horner's Avatar theme song, "I See You," and tweeted that she was "so saddened" to hear about the composer's death. 

"To work with James Horner was one of the biggest moments of my life. He was such a kind soul," she wrote.

Howard and Russell Crowe worked on A Beautiful Mind in 2001 with Horner, and both paid their respects via social media.

Horner also did the score for CBS Evening News when Katie Couric was the lead anchor. "So sad about the brilliant composer James Horner who wrote the theme song of @CBSEveningNews during my tenure," she tweeted. "A lovely, talented man."

Here's a number of other stars that shared the impact Horner had on their lives and careers:

NEWS: More on the Tragice Death of Titanic Composer James Horner

On Monday morning, a plane registered to Horner crashed in North Ventura County, Calif. The pilot was killed, and the composer's death was later confirmed by his assistant Sylvia Patrycja in a post on Facebook.

In addition to Titanic, Horner is perhaps best known for his scores in Braveheart, Avatar and Apollo 13.