Demi Lovato lights up the charts with their singles, but the singer's commitment to pop empowerment boosts their catalogue's energy. The stadium-rock pomp of the devoted “Lionheart” and the sinewy guitars of anthem “Fire Starter” give Lovato formidable platforms for that feisty, strong voice, while ballads like the soul-tinged “My Love Is Like a Star” allow the singer to show off their sensitive side.