Lambert, a three-time winner of the ACM Female Vocalist of the Year, has been added to the lineup for Thursday, June 7.
Little Big Town will take to the LP Field stage on Saturday, June 9.
The CMA has also announced the singers selected to perform the national anthem before the start of each night’s concerts. They are: Nashville School of the Arts Madrigal Singers (June 7), The Oak Ridge Boys (June 8), Julie Roberts (June 9) and Sarah Darling (June 10).
The 2012 CMA Fest takes place June 7-10 in Nashville. Select tickets are still available. For more information visit the CMA Fest website HERE.