She may be a global megastar with 17 Grammys and 118 million record sales to her name, but that hasn't stopped Beyonce getting caught up in a dispute about ownership of one of her best-known hits. 

Beyonce at the Vanity Fair Oscars PartyBeyonce has rejected claims she plagiarised 'XO'

The singer has denied stealing her hit single 'XO' from a backing singer, reportedly claiming the track bears no resemblance to the man's song 'XOXO' beyond the similar name, The Mirror reports.

Ahmad Lane filed a $7million lawsuit against Beyonce, her music company Parkwood Entertainment and Columbia Records last year, claiming the singer pinched the music for 'XO'. He claims he was working with her current background singer Chrissy Collins for another artist, when he played his sing 'XOXO' to her, and alleges she then passed it on to Beyonce.

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But Beyonce denies the allegation, calling the lawsuit "vague and cryptic" according to legal documents obtained by Radar Online.

"The two works at issue are entirely different songs that share no lyrical or musical similarity, other than perhaps the letters X and O," the documents state.

The allegation is that 'XO' "copies the first four bars of an eight-bar melody that is looped," and "contains a four-note sequence that is similar to the four-note sequence" in Lane's song.

But Beyonce's attorney pointed out the lack of similarities between the two tracks when he asked the court to listen to them both. The court papers insist the two songs do not share "melodic content and there is no meaningful similarity in pitch series, rhythm or rhythmic patterns, melodic development or structure."

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