Beyoncé , Adele , Christina Aguilera , Rihanna , Shakira , Demi Lovato and Katy Perry all rejected songs eventually included in This Is Acting .
Mainly an electropop album , it is composed of songs written by Sia which were rejected by artists , such as Beyoncé , Adele , Christina Aguilera , Rihanna , Shakira , Demi Lovato and Katy Perry. ``
This Is Acting