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"Beyonc\u00C3\u00A9 will reportedly open up about her rumoured miscarriage in her upcoming HBO documentary. The &amp;#039;Halo&amp;#039; singer is said to reveal how her loss inspired her to write the &amp;#039;saddest song&amp;#039; of her life, Metro reports.  Husband Jay-Z sparked rumours that the singer had previously suffered a miscarriage before the birth of daughter Blue Ivy when he penned a track about her last year. In the song he rapped: &amp;quot;Last time the miscarriage was so tragic/We was afraid you&amp;#039;d disappear/But nah baby you magic.&amp;quot;  Beyonc\u00C3\u00A9 also opens up about her successful music and acting career in the self-directed documentary, which airs on February 16 on the cable network. She will also take to the stage next weekend for her much-anticipated Super Bowl halftime performance and has posted rehearsal pictures teasing her set.   It is rumoured that she will reunite with her Destiny&amp;#039;s Child bandmates. However, this has since been denied by Michelle Williams. When WRUG Radio asked about the Super Bowl reunion, Williams said: &amp;quot;That&amp;#039;s not confirmed. It is rumoured. I&amp;#039;m gonna be in the musical Fela!. I hate to disappoint the people and tell them that it&amp;#039;s not true.&amp;quot; Beyonc\u00C3\u00A9 has been at the centre of controversy recently after it was alleged she lip-synched her performance of &amp;#039;The Star Spangled Banner&amp;#039; at the inauguration of President Barack Obama. View all of today&amp;#039;s best celebrity pictures - Photo gallery:  "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.digitalspy.com/showbiz/news/a454163/beyonc-to-open-up-about-miscarriage-in-hbo-documentary/>