Show her vocal talents, Leighton Meester is seen behind the microphone in a brand new video for his film song "Summer Girl".The melody that comes from country singer Jessica Andrews in2005, offered "Gossip Girl" actress up their own version of herupcoming film "Country Strong." In the film, which co-stars GwynethPaltrow, Miss Meester portrays a beauty pageant hopeful turned the country Crooners named chiles Stanton.