Wasn't 2014 the year of Chandelier? There wasn't a club, shopping centre, karaoke lounge or playlist which didn't blast Sia's hit, one that introduced us to the vocal powerhouse that is the 40-year-old Aussie. Previously in the backroom writing and producing songs, the track off her critically acclaimed 1,000 Forms of Fear put her into the spotlight — one she hid from under a large blonde wig.

Yet, you've probably heard that Chandelier wasn't initially meant to be belted out from Sia's very own lips. Like many of her hits, she's revealed in previous interviews that she had tried to give the track to Katy Perry — the same went for her follow-up single, Elastic Heart. In fact, while Sia's vocal chops seem to be perfectly made for those hits, many of the songs she's written were meant to be recorded by someone else.

And some have been sold. Take Jessie J's Flashlight, for example, which made waves from its release as part of the soundtrack of Pitch Perfect 2. While you'd like to think that the Brit is telling you that you are in fact her flashlight that's getting her through the night, she's actually borrowing someone else's words — that of Sia and Sam Smith's.

Released on 29 January, This Is Acting chronicles 12 songs that didn't make it — or did they? While they've escaped the clutches of pop princesses Shakira, Rihanna and Adele, they've found a home in Sia's seventh album. Curious to know which track was meant for whom? Find out below.

For Rihanna: 
Cheap ThrillsBird Set Free and Reaper

Originally meant to appear on Rihanna's ANTI, some parts of Reaper actually does sound like Rihanna's singing them — of course, it's just Sia hitting all the right notes.

For Adele:
Bird Set Free and Alive

Right from the piano solo get-go, you can already picture Adele belting out this ballad. Originally co-written with Adele for the record 25, the Brit eventually dropped it. Rumours however have suggested that the song's meaning was intended for Adele's unfortunate episodes involving her vocal chords. 

For Beyoncé:

You can almost picture Beyoncé in a music video for this, with, you guessed it, her footprints in the sand as she walks into the sunset dressed in a white kaftan and Blue Ivy in tow.

For Shakira:
Move Your Body

With such an uptempo and zumba-friendly beat, Sia's not fooling anyone — Shakira's hips would have been all over this.

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