The Fifty Shades Of Grey movie is just about two weeks off (released 13 February) – you'll know this whether you’re planning to go and see the movie or not, thanks to the huge amount of Twitter buzz around it. Today, adding to the chatter, Aussie singer/ presumed Dance Moms fan, Sia, has just dropped a new track, Salted Wound, from the film’s soundtrack.  She’s in good company with the likes of Jessie Ware, The Weeknd, Ellie Goulding and Beyoncé contributing to the film’s backing music, and no, before you ask, the audio-only release has no Shia LeBeouf/ Maddie Ziegler interpretative dance situations to speak of… yet

Everyone was talking about Sia's last song. Here's why.

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