Led by charismatic vocalist/guitarist Lzzy Hale, Pennsylvania-based post-grunge/metal quartet Halestorm have become one of the most successful female-fronted hard rock groups of the early 21st century. With an aggressive yet hook-heavy sound that has become a fixture of American rock radio, Halestorm have toured restlessly, playing hundreds of shows per year and sharing the stage with nearly all of the popular American hard rock acts of their era.