Sia has debuted the 'Finding Dory' theme song 'Unforgettable’ and it’s every bit as magical, emotional and fin-flipping fabulous as we'd expected.

BRB, just going to go and play it on repeat until'Finding Dory' is finally released in cinemas.

Sorry not sorry, neighbours.

Sia debuted the song on The Ellen Show, where she also explained why she signed up to make the song, which will play over the film’s end credits.

She explained: “Dory's story makes me teary,” to which Ellen replied: “Dory's story makes a lot of people teary. It’s really beautiful and when you see it and then hear it, it makes even more sense.”

For trivia fans, ‘Unforgettable’ was written by Irving Gordon and made famous by Nat King Cole in the 1950s. In 1992, Natalie Cole’s rendition on her duet album led the song to a Grammy win.

Can we have the film now please?