Aguilera released a lyric video for the track on YouTube which features photographs that match the lyrics from the two singers.
"I got a mind to show my strength/ And I got a right to speak my mind/ And I'm gonna pay for this," Aguilera and Lovato sing during the chorus. "They're gonna burn me at the stake/But I got a fire in my veins/I wasn't made to fall in line."
"Fall in Line" is set to appear on Aguilera's upcoming eighth studio album, Liberation. The project, which also includes the single "Accelerate" feat. Ty Dolla $ign and 2 Chainz, is scheduled to be released on June 15.
"To anyone who's ever felt silenced and repressed, the truth seekers and bold thinkers... may you liberate your voice and break the mold, never back down, and never fall in line," Aguilera said on Twitter about "Fall in Line."
To anyone who’s ever felt silenced and repressed, the truth seekers and bold thinkers… may you liberate your voice and break the mold, never back down, and never fall in line. https://t.co/hfWO13Ds1t #FallInLine @ddlovato pic.twitter.com/Nat3WeHDZb— Christina Aguilera (@xtina) May 16, 2018
Aguilera is set to embark on a 22-city North American tour in support of Liberation that begins on Sept. 25.