The mother of two released her last album, Lotus, in 2012, but has been working on her new record for quite a while.
"I'm big on the marination process," she told ET in 2015. "I have to make sure the details are all there."
"I really value the creative process and the time it takes," she added. "I am working with some incredible new people that, even I'm surprised [to be working with], and then also re-joining with some dear friends of mine, collaborators [like] the beautiful Linda Perry."
And last February, Aguilera told ET that she was working on "multiple albums": "One being a follow-up to my debut Spanish album, [and] a few solo projects with some incredible producers."