The ‘FourFiveSeconds’ singer, 27, currently is working on her eighth studio album but declined a track co-provided by the superstars despite their incredible writing credentials.
Sia, 39, – who’s got already released ‘Alive’ which she also penned with Adele – said: “We wrote three songs by 50 % days and undertake and don’t made the cut and this also was at least one.
“I thought to [Adele], ‘Do you mind if I pitch it to, say, Rihanna?’ And she said, ‘Yeah, but could you take my vocal off it because I don’t want my vocal boating out there using a demo’.
“So I went and re-cut the vocal and everybody during my life was like, ‘You can’t give this away to anybody’.” Check Hello sheet music page.
Despite others insisting she kept the track for herself, she offered it to Rihanna to be with her new album ‘Anti’ but doesn’t think it had been “edgy” enough on her behalf.
She told Ryan Seacrest: “Well actually I believe she did [get the chance to consider it] and she or he passed.
“We sent it to her, however it is not really her so I have no idea of why I thought that. It is a smash, but she’s more edgy.”
The track – titled ‘Bird Set Free’ – can appear on Sia’s seventh album ‘This is Acting’ as a result of be released in January.