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"Katy Perry has previewed her new music video online. The singer will release &amp;#039;Birthday&amp;#039; as the fourth official single to be lifted from her latest album Prism.      A teaser for the accompanying music video sees Perry play a host of birthday party entertainers, including Goldie, an aged Vegas dancer, Kriss the clown and Princess Mandee. The full music video for &amp;#039;Birthday&amp;#039; will officially premiere on Thursday, April 24. &amp;#039;Birthday&amp;#039; serves as the follow-up to Perry&amp;#039;s recent singles &amp;#039;Roar&amp;#039;, &amp;#039;Unconditionally&amp;#039; and &amp;#039;Dark Horse&amp;#039;. The star&amp;#039;s third studio album Prism topped the UK and US chart upon its release back in October. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.digitalspy.com/music/news/a565834/katy-perry-plays-party-entertainers-in-birthday-music-video-teaser/>