Forget that little Mockingjay whistle — Katniss can sing! Or so we all thought a few days ago, when a new House at the End of the Street clip showed up featuring Jennifer Lawrence singing and strumming a guitar. And while it sounded nice, it's not J-Law. She recorded her own vocals for the scene — a version Showblitz hears "wasn't half bad and nearly made the cut" — but a singer called Sarah Rayne ended up dubbing over the song. Psych!