Brandi Carlile and Sam Smith have teamed up for a duet.

It’s a new version of Carlile’s song “Party of One,” which originally appeared on By the Way, I Forgive You. There’s a video for the track on YouTube now. A portion of the profits will be donated to Children in Conflict as part of its ongoing campaign to raise $1 million for children affected by war.

Carlile says, “I’m beyond proud to have collaborated with the incredible Sam Smith. There is no one quite like him and I’ve never heard a voice like his before. He’s an absolute gentleman and a sweetheart, and I’m proud to call him my friend. We came to know one another through our work as ambassadors for Children in Conflict, so it felt only right to use our platforms and music as a tool to spotlight the work they are doing to help children affected by war.”

Smith adds, “Working with Brandi Carlile is truly one of the highlights of my career. Her voice and songwriting get me through the dark days. Brandi is a mentor to me and now a friend, and I’m so thankful she asked me to feature on her single. I hope you all love this as much as I do.”