Beyonce Knowles has sent Twitter into high gear with the unannounced release of her fifth solo album. The pop diva posted an Instagram teaser video with the word "Surprise!" to let fans know the 14-track album is available on Apple iTunes, which temporarily crashed from traffic. Beyonce "just changed the game forever! Expect more 'surprise' albums from superstars in the future!" gossip blogger Perez Hilton tweeted.
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