Jennifer Aniston "doesn't know" if she can sing.

The actress is set to star as a prison inmate who joins a country and western group in 'The Goree Girls' and admits she is unsure whether her musical abilities will be up to scratch ? but insists it doesn't matter if she is terrible.

She said: "I can carry a tune. I don't know if I'm a good singer yet. Here's the good news. The band ? this takes place in 1929 ? they weren't musicians. They basically created a band in prison in order to get paroled. So you're dealing with new singing voices and new instrument-playing. and somehow they find a way and become a huge phenomena. It's a true story."

Jennifer has had to take guitar and singing lessons for the role and admits the preparation was radically different from that which she undertook for 'The Bounty', which she is currently working on.

She added: "Oh, it's so fun. So much like action and I mean, I was in car chases and firing guns, thrown in trunks, drove the carts ? whatever they call those things ? into lakes, hung from buildings. It was just a ball."