Gwyneth Paltrow's got the "Glee" bug! She belts out a number of tunes in an upcoming guest appearance on the hit FOX show on November 16, and then she sings her heart out in her new movie, 'Country Strong,' in theaters everywhere January 7.
"'Glee' was super fun; I loved it," Gwyneth tells ET about her experience with the show, in which she plays a substitute teacher. "It was a completely ridiculous character. ... Man, they work you hard on those TV shows. ... The hours are insane, but it was so much fun, I would love to do that again."
In her new musical drama 'Country Strong,' Gwyneth straps on a guitar as an unstable country music singer who gets involved with a rising singer-songwriter (Garrett Hedlund). As they embark on a career resurrection tour with her husband/manager (Tim McGraw) and a beauty-queen-turned-singer ("Gossip Girl"'s Leighton Meester), romantic complications ensue and old demons threaten to derail them all.
The Oscar winner says that the country music world marked new territory for her, and it didn't hurt that she was asked to put on a few extra pounds for the role.
"I love an excuse to eat," laughs Gwyneth. "I didn't have to gain 20 pounds, but I gained probably 10 pounds. [Director Shana Feste] just didn't want me to be in super good shape. ... So I had a good time -- fried chicken, Tim's mashed potatoes. I was very happy. He makes the best mashed potatoes I've ever had."
For those not in the know, Gwyneth has flexed her vocal talents onscreen before. In 2000's 'Duets,' directed by her late father Bruce Paltrow, she played a woman who tries her hand at karaoke, winning over the audience with her version of "Bette Davis Eyes."