February 15th, 2012
09:33 AM ET
Allow Amanda Seyfried to clear her throat - the actress is busily warming up for her role as Cosette in Tom Hooper's "Les Miserables" adaptation.
Seyfried, who showcased some of her vocals in 2008's "Mamma Mia!" said the key to training for a musical movie is to not rest one's voice, but rather to never stop singing.
"You just continue to train your voice," she told CNN. "You go to the doctor a lot and you stay away from dairy. That's all I can do right now. I know all my songs like the back of my hand."
The audition process was four months long, and thankfully the 26-year-old enjoys belting out songs as much as she enjoys acting.
"It's really a lot to sing but it's so fun. It's like, my favorite thing to do. I think this movie's going to be quite an experience."
Seyfried said she's currently in rehearsals for "Les Mis," now that she's wrapped her starring role in the Linda Lovelace biopic, "Lovelace."
The movie, about the pornographic film actress, is expected to debut this year, although it will arrive at the theater with a last minute casting change.
Seyfried's former co-star, Demi Moore, had to drop out of the film last month. Instead, Sarah Jessica Parker jumped on board to play Moore's vacated part of Gloria Steinem.
"I was really bummed," Seyfried said of Moore's exit. "We were all really bummed. She worked so hard and she was the perfect Gloria. Things just don't work out the way you want them to, but then it's hard to wish for someone's well being but substitute them."
"It sucked," Seyfried said, "but Sarah Jessica Parker was so awesome. Oh my God, I couldn't believe it. I mean, I know she felt bad, she felt really bad, too. And she was really nervous. Gloria Steinem's an icon. [But] she filled her shoes really well."
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