Sia has increased her amount of celebrity collaborators by two with “Free Me.”

“Free Me” is an emotional ballad released in support of the #endHIV Campaign in collaboration with the Abzyme Research Foundation.

The video for the song follows Zoe Saldana, whose character learns that if she doesn’t take the correct measures, the HIV she contracted will spread to her baby, as she is also an expecting mother.

The whole clip is narrated by Julianne Moore, who follows Saldana through her journey. Saldana’s expectant mother character also expresses herself through powerful interpretive dance choreographed by longtime Sia colleague Ryan Heffington.

All proceeds from purchases of “Free Me” will go to the #endHIV Campaign, where the money will be used to advance a new potential HIV/AIDS cure to human clinical trials.

Though the video for the song has already been released, the song itself arrives on digital platforms tomorrow, June 9. Check out the video below:

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