Sia Working on Documentary About Herself With Husband Erik Anders Lang

Rex Features via AP Images

Sia at the The Humane Society of the United States 60th Anniversary Benefit Gala, in London on March 29, 2014.

Enigmatic singer and songwriter Sia is co-directing a documentary about her life with with husband Erik Anders Lang, Deadline reports.

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The documentary -- reportedly titled Untitled Sia Documentary Project -- will be one of the first projects under the newly formed Los Angeles-based production company Pictures, Pictures, which was recently announced by Lang and producer Ryland Aldrich.

The Sia doc, which is pre-production, will offer a never-before-seen look at the artist's mysterious life, according to Deadline. Lang has worked on film projects for Serato, Louis Vuitton, Hollister, The Guggenheim, Honda, MTV, Pharrell, Public Enemy and TED.

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Sia confirmed the news by tweeting a link to the Deadline story from her official account on Friday, Sept. 11. Billboard has reached out to Pictures, Pictures representatives for further details.

As previously reported, Sia showed up at international film festival Venice Days to dish about her new film project Sister, which she's written and will direct, for her frequent collaborator Maddie Ziegler.

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Based on a one-page story she wrote eight years ago, Sia said, "I was too embarrassed to tell anyone I wanted to make a movie, because I thought it would be seen as a vanity project, because I was a singer. ... And then last year after I made the 'Chandelier' video, I realized that I was pretty good at directing, so I felt a little bit braver."