Hip hop fans get ready. Jay Z's Facebook page holds the key to the 'Holy Grail' music video. The hit new single from Jaz-Z's album Magna Carta features Justin Timberlake and premiered only on the rapper's Facebook page, making him the first artist to post a music video exclusively to the social media platform. In less than a few hours, the video had over 34,000 likes and over 24,000 shares. Krystin Goodwin has the story.