Why did Celine sing the song about titanic?

The song "My Heart Will Go On" was not sung by Celine Dion, but rather written and performed by Canadian singer and songwriter James Horner. The vocals for the song were provided by Celine Dion, who rose to fame following the success of the song. However, the song was the inspiration for the popular 1997 American epic romance and disaster film "Titanic," directed by James Cameron, and was featured prominently in the film's soundtrack. Dion's performance of the song became an iconic theme for the film, contributing significantly to its success.