Singer-songwriter Sia has returned to the studio to work on a brand new record, it has been confirmed.

The 'Titanium' vocalist may have announced her own retirement last year, but producer Greg Kurstin confessed to Rolling Stone that he's been working on new material with her and a new album is definitely happening:

"We're making an album. I know she said she was semi-retired, but we're doing an album. I'm producing it and it's really fun. She's awesome."

Superstar Diplo also let slip that he's producing some of her new material at the ASCAP Pop Music Awards earlier this week: "I have a lot of production that's about to come out. Everything from Tinie Tempah to Chris Brown to Sia. I have a lot of records coming out."

On April 16, Sia shared a link to the new sampler for the upcoming blockbuster 'The Great Gatsby' on Twitter, which features a song of hers called 'Kill And Run'.