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The song "Underdog," written by Australian singer-songwriter Sia Furler, was specifically crafted for the renowned singer Alicia Keys. Sia's exceptional songwriting skills shine through in this empowering track, which celebrates overcoming adversity and embracing one's inner strength. With its motivational message and soaring melodies, "Underdog" has resonated with audiences worldwide, leaving a lasting mark in both Sia's and Alicia Keys' musical careers.