The Wrecking Ball singer was scheduled to sing Hands of Love from the movie Freeheld at a party thrown in L.A. to promote the song before voting closes for the 2016 Academy Awards.

During the bash, Linda Perry, who wrote the track, announced Miley could not make it because she was still Down Under, where she is rumoured to be rekindling her romance with former fiance Liam Hemsworth, according to E! Online.

The former couple was spotted kissing and cuddling at the Falls Festival in Byron Bay, Australia, on Saturday (02Jan16), more than two years after they called time on their relationship.

Linda also told E! Online how Freeheld star Ellen Page recruited Miley to sing the gay rights anthem, saying, "She (Ellen) called her and Miley said yes... I was expecting a f**king hurricane but she came in all chill, ready to be of service, sang the song like three times and was like, 'Linda, do you need anything else?' She was so generous with her time. She was so sweet. I'm a huge fan now because of that."

Christina Aguilera, Courtney Love and Juliette Lewis performed at the party.

Liam previously revealed to Men's Fitness magazine that he will always have feelings for Miley, saying, "You fall in love with who you fall in love with... You can never choose. I guess some people just come with a little more baggage.

"I mean, look - we were together five (sic) years... So I don't think those feelings will ever change. And that's good because that proves to me that it was real. It wasn't just a fling. It really was an important part of my life and always will be."

They met on the set of The Last Song in 2009 and became engaged in in 2012. They announced their split in September, 2013.