Pistol Annies

While working on songs for her third album, Revolution, Miranda Lambert turned to fellow country singer Ashley Monroe for help. The girls wrote two songs together, including the number one single “Heart Like Mine,” and decided to keep collaborating after the album’s release. Angaleena Presley later joined the songwriting sessions, too, turning what began as a standard collaboration into a sort of countrified girl group. Dubbing themselves the Pistol Annies, the three developed a spunky, harmony-heavy sound and made their debut in April 2011, singing “Hell on Heels” at the Academy of Country Music's Girls' Night Out: Superstar Women of Country telecast. An album of the same name followed later that year, topping the country charts during its first week of release and stirring up some buzz for Lambert’s fourth record, which appeared in October.