"The album is finished. She's mixing. She hasn't made a final decision about what the first single is, but I know everyone feels good about their options," he told Rapup.com. "She's gonna do the film first. She didn't want to not be able to promote this record because it's gonna be a big record for her."
Stewart, who has worked with everyone from Beyoncé to Rihanna, thinks that this album, like so many of Aguilera's in the past, shows another side of the singer. "It's just great. I wouldn't say that it's alternative, I wouldn't say that it's different," Stewart explained. "Christina's always been an artist that moves the bar and that's what the great ones do. They don't stay in the same place for too long, and this album is just another move for her."
As for collaborations, Aguilera has already talked about working with M.I.A. and Santigold on the album, but Stewart is revealing that she also hit the studio with another unexpected artist. "I know that there's a lot of other cool features, like I know that she has Santigold and Flo Rida on there," he said. "I put Flo Rida on my record because I love what he does. I think sometimes he doesn't get credit for being as dope as he is, but he's really dope."
Aguilera went retro for her Back to Basics album, and she's already touched on her love of the future on her song "Keeps Getting Better." But according to Stewart, this album harks back to her work from seven years ago, when she went a bit raunchy.
"I really feel it's one of her best bodies of work that I've heard since Stripped. I think it's really, really amazing and I think it's well put together," he said. "She's mixing it up again. She's singing R&B again, she's doing pop. She's doing it all, but she's found a way to make it all meet in the middle because she's so many different things."
As for Aguilera's ability to change up her musical style, Stewart credits that to her natural abilities as a singer. "She's a real serious musician, she's a real serious pop artist, and she's a real serious singer," he said. "She's making all her audiences happy at the same time."