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"Rihanna is believed to have collaborated with Chris Brown on a new song. The pair are heavily rumoured to have hooked up for a full version of Rihanna&amp;#039;s Talk That Talk album track &amp;#039;Birthday Cake&amp;#039;, which will be released on the star&amp;#039;s birthday on February 20.   According to MissInfo.tv (via Billboard), Rihanna and Brown have recorded vocals for the new remixed version, with Brown set to feature in the accompanying music video. The report suggests that Brown sings and rhymes on the track, but it has not been clarified whether both aspects will be included on the final edit. &amp;#039;Birthday Cake&amp;#039; producers Da Internz told MTV: &amp;quot;It&amp;#039;s gonna be crazy. And the feature on there is gonna shock the world.&amp;quot; Rihanna allegedly invited her ex-boyfriend Brown to her 24th birthday party on February 14 where they were &amp;#039;coupled up&amp;#039; at the bash. The pair separated in 2009 after Brown assaulted Rihanna, receiving five years&amp;#039; probation and six months of community service. Listen to the album version of Rihanna&amp;#039;s &amp;#039;Birthday Cake&amp;#039; below:      "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.digitalspy.com/music/news/a366377/rihanna-to-collaborate-with-chris-brown-for-new-song-birthday-cake/>