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"The cast of Glee will perform a mashup of two Adele songs on an upcoming episode.  Fox has released a new clip from the musical series featuring a mashup of the Adele songs &amp;#039;Rumour Has It&amp;#039; and &amp;#039;Someone Like You&amp;#039;.  The number will be performed by cast members Amber Riley and Naya Rivera as part of a competition on the forthcoming installment titled &amp;#039;Mash Off&amp;#039;. Watch Amber Riley and Naya Rivera cover Adele&amp;#039;s &amp;#039;Rumour Has It&amp;#039; and &amp;#039;Someone Like You&amp;#039; below:      The performance will mark the show&amp;#039;s 300th musical number.  Glee&amp;#039;s previous episode &amp;#039;The First Time&amp;#039; saw two of the show&amp;#039;s couples - Kurt and Blaine and Rachel and Finn - have sex for the first time.  Series creator Ryan Murphy described the episode as &amp;quot;exciting&amp;quot;, admitting that he is thrilled to be involved in one of the first shows to depict a gay couple engaging in intercourse on US network television.  &amp;#039;Mash Off&amp;#039; airs in the US on Fox next Tuesday, November 15 at 8pm and in the UK on Sky One next Thursday, November 17 at 9pm. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.digitalspy.com/tv/glee/news/a350279/glees-amber-riley-naya-rivera-perform-adele-mashup-watch-video/>