Celine Dion's Titanic song almost didn't happen!

One of Celine Dion's most memorable songs almost didn't happen.

The movie Titanic - which came out almost 20 years ago - features the track My Heart Will Go On and apparently at first the singer wanted no part of it.

However, she was eventually convinced by record executive, Tommy Mottola, to lay down a demo of the ballad.

Celine completely knocked it out of the park, flawlessly performing the song in just one take!

Now the final iconic song you hear at the end of the movie is actually that very first demo!