Washington, Sept 11 : Jennifer Aniston has promised that her vocal performance in The Goree Girls “won’t be bad”.

The former Friends star is back to rehearsing the seven notes as she prepares for her role in The Goree Girls, a film about a 1940s band formed by all-female prison inmates.

The 40-year-old Aniston who has attended New York''s High School of the Performing Arts as a teenager is now learning to play the guitar and says she won’t disappoint her fans.

Contactmusic quoted her as telling People. com: "I can carry a tune. It won''t be bad. Here''s the good news: the band - 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 phenomenon. It''s a true story." (ANI)