Miranda Lambert is having trouble keeping all the new music she's been working on a secret. The singer let a song leak at a show in South Carolina recently, and at least one fan had a camera rolling to capture the performance. 'Baggage Claim' sounds like a message husband Blake Shelton does not want to hear.

The funky, fed-up-and-finished number begins "I have been draggin' around your sensitive ego / Making sure your bags arrive on time / For the dog and pony show," and ends with "So come and get your sh---!" Clearly a happy honeymoon and blissful marriage haven't dulled Lambert's ability to cut a man to pieces. 'Baggage Claim' is a return to the fire and bullets that the 'The House That Built Me' singer became known for early in her career.

Lambert recently revealed to Taste of Country that she will release a song to radio next month, but it's not clear if 'Baggage Claim' will be the debut from her fourth album 'Four the Record,' in stores November 1. Until then fans will have to satiate their Lambert cravings by enjoying the new song 'Hell on Heels' from her all-female band Pistol Annies. The Pistol Annies debut album will be released on August 23.

Lambert is nominated for the Female Country Artist award at the 2011 Teen Choice Awards on August 7. This weekend she'll be touring through the southeast with stops in Mississippi and Alabama.

Watch a Fan Video of Miranda Lambert Singing 'Baggage Claim'