The duet is a culmination of the singers' long-running friendship that is only now manifesting itself in a musical way. "When we met, I was 12 and Joy was like 18 or 19, I think," Hayley Williams told NPR about the beginnings of the kinship. "I was already a fan of hers. It was fate that we became friends. She was always giving great advice and listening to songs I'd written or big plans I had about becoming a real artist� I love that I got to sing this with someone who I have shared my pains and my stories with for quite some time. Someone whom I know well and who I've sat and listened to as they share their own pains. It was never meant as romantic song between lovers but always a song to a friend. Now it's even more special. I think of it as an ode to sisterhood."

The track comes with a simple, black and white music video, which features both vocalists singing the song together in the vocal booth of the Village Recorder studio in Santa Monica, Calif.-the same room that Fleetwood Mac's Stevie Nicks personally decorated during sessions for that band's 1979 album, Tusk Their voices mesh seamlessly on the new version of the tune, with their easy chemistry captured in the clip.

"I felt like some of the mystic spirit of Stevie is still in the walls there," Joy Williams said of the session. "That's a good energy to have in a room, especially with two women recording like we were. It felt like the perfect place to let down, light candles, take off our shoes and just be. We'd take breaks, make hot tea in the studio kitchen, and get lost in conversation before we realized we should probably get back to work."