Christina Aguilera has announced that she is donating the proceeds from her new single, "Change," to those affected by the massacre.

49 people were killed and at least 50 more were injured when Omar Mateen opened fire inside of Pulse nightclub in Orlando on Saturday night. It is the deadliest mass shooting in U.S. history, and police have labeled it as an "act of terrorism."

"Waiting for a change to set us free / Waiting for the day when you can be you and I can be me / Waiting for hope to come around / Waiting for the day when hate is lost and love is found / Waiting for a change," she sings in the chorus.

Aguilera co-wrote the song with Fancy and Flo Reutter, and all of their earnings on U.S. iTunes downloads for the next three months will be donated to the National Compassion Fund, which directly benefits the Orlando shooting victims and their families.

"The horrific tragedy that occurred in Orlando continues to weigh heavily on my mind. I am sending so much love and so many prayers to the victims and their families," Xtina said in a statement on her website. "Like so many, I want to help be part of the change this world needs to make it a beautiful inclusive place where humanity can love each other freely and passionately."

"We live in a time of diversity, in a time of endless possibilities, in a time where expression of oneself is something to be celebrated," she added. "And I am left wondering how people filled with so much love could be taken by so much hate. Though there is such heavy sadness, I believe that there is much more love in the world than we know. We need to learn to love again, we need to learn that one person does make a difference; we need to keep love in our hearts."