Sia Revealed Her Next Single Was Written For Adele

Vittorio Zunino Celotto/Getty Images for Miu Miu
Sia attends the Miu Miu Women's Tales Dinner during the 72nd Venice Film Festival at Ca' Corner della Regina on Sept. 3, 2015 in Venice, Italy. 

Sia is known for penning songs by some of the biggest names in pop music, and she has done it again with Adele -- but this time, she's singing the track herself.

The singer-songwriter's next single, "Alive," was originally written for and with Adele and co-writer Tobias Jesso Jr., but according to RTV Slovenija (translated via Google Translator), Sia said Adele rejected the track at the last minute. Nevertheless, she decided to take on the track anyway. “It’s about [Adele’s] life, so I now sing a song from [Adele’s] perspective,” she told the outlet.

"Alive," which will be released Sept. 26, is the lead single from Sia's upcoming album This Is Acting. The song coincidentally works perfectly with the theme of the LP, as Sia told NME in February that the title stems from creating songs not necessarily meant for herself. “I’m calling it This Is Acting because they are songs I was writing for other people, so I didn’t go into it thinking, ‘This is something I would say,'” she said. “It’s more like play-acting. It’s fun.”

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Along with her upcoming album, Sia has also written a new film project titled Sister and starring Maddie Ziegler. Sia previously collaborated with Ziegler for her "Chandelier" video, her first directing stint that gave her the confidence to do it again with Sister. As for This Is Acting, no release date has been announced, but it is expected later this year.