The movie maestro died in a plane crash in California on Monday (22Jun15) when the small aircraft he was piloting plummeted to the ground close to the city of Santa Barbara.

Dion has now expressed her grief over the loss of Horner, whose theme song from 1997 movie Titanic became the biggest hit of her career and won the pair an Oscar for Best Song as well as four Grammy Awards.

In a statement posted on her website, Dion declares, "(My husband) Rene and I are deeply saddened by the tragic death of James Horner. He will always remain a great composer in our hearts. James played an important part in my career. We will miss him. We offer his family and friends our deepest sympathy."