Inside a bomb shelter in Ukraine -- crammed tight with elders, adults, and children -- young Amelia let the resonance of her voice fill the long room. Singing the Disney song, "Let It Go," anxieties were soon dispelled, replaced by the purity of a child's voice and hopeful stares. The video quickly went viral, with the song's original songwriter Kristen Anderson-Lopez tweeting: "Dear Little Girl with the beautiful voice, My husband and I wrote this song as part of a story about healing a family in pain. The way you sing it is like a magic trick that spreads the light in your heart and heals everyone who hears it. Keep singing! We are listening!"