Will Smith's daughter made her musical debut this week, and it's ... terrifying, at least to old-timers like us who feel like a nine-year-old shouldn't sound 18. Which is exactly how Willow sounds on her admittedly well-done single, "Whip My Hair." Jay-Z, who signed the young Smith to his Roc Nation label, says such talent at her age is rare, the AP reports. Listen in the gallery.
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