Sia Sings 'Finding Dory' Theme Song 'Unforgettable' - Watch!

Sia has been announced as the end credits song performer for Disney Pixar’s upcoming movie Finding Dory, hitting theaters on June 17.

The “Chandelier” singer will be closing out the Ellen DeGeneres led flick with her rendition of the song “Unforgettable.”

“Dory’s story makes me teary,” Sia said. “When Ellen asked me, I couldn’t refuse!”

The song was originally written in 1951 and earned a Grammy when Natalie Cole recorded it as a duet tribute to her late father Nat King Cole in 1992.

Sia performed her rendition for the first time on the Ellen DeGeneres Show on Friday (May 20). Watch below!