Beloved Canadian chanteuse Céline Dion surprised fans and competitors alike with a message of love and gratitude at this year's Eurovision Song Contest, a competition she says was "life-changing" for her and helped launch her to global superstardom.

The music superstar delivered a pre-recorded message to the multi-national singing competition as Dion continues to battle a rare neurological disorder called Stiff Person Syndrome.

Celine Dion made a surprise video appearance at Eurovision on Tuesday, 37 years after winning the song contest for this year’s host nation, Switzerland.