To get to sing it for the cause is a dream come true," Sia tells PEOPLE exclusively of her cover for the PSA. "Lyrically, it's so, so beautiful. This is a legend." Benny Blanco Reveals Sia Wrote ...

While her biggest hits have all come in the last two years, Sia has been in the music industry ... day after day." Hiding her face in interviews, videos, and performances forces people to judge ...

Sia has made it point of hiding her face since she started becoming known in the industry in an effort to be less recognizable. "I don't want to be famous, or recognizable," she explained to Chris ...

The singer spoke exclusively to PEOPLE about teaming up with the the charity, which has rebranded to the Humane World for ...