What did Sia wrote for Beyonce?

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Tags

1. #written
2. #pretty
3. #result
4. #latter
5. #beyonc
6. #failed
7. #record
8. #handled
9. #initially
10. #track
11. #hurts
12. #artists
13. #perry
14. #rihanna
15. #offered
16. #instead
17. #production