Dua Lipa's lawyer has insisted she's "never heard" the tracks she is accused of infringing in a copyright lawsuit about her song Levitating.

Axar.az reports the singer was sued in March by songwriters L. Russell Brown and Sandy Linzer, who claimed that the singer copied their 1979 song Wiggle and Giggle All Night and 1980 tune Don Diablo.

The songwriting duo alleged that Levitating is "substantially similar" to Wiggle and Giggle All Night, stealing its "signature melody" and "compositional elements".

Lawyer Christine Lepera, representing Dua and her co-defendants, responded on Tuesday by filing a letter to a federal judge in New York. In the letter, she insisted that the case should be dismissed immediately as Dua had no access or exposure to the tracks cited in the lawsuit.

"The Levitating writers never heard the (plaintiffs') compositions. The alleged similarities - a descending scale in which each pitch is repeated on evenly spaced notes, and a common clave rhythm - are unprotectable, and the result of the coincidental use of basic musical building blocks," the letter to Hon. Katherine Polk Failla reads, reports Rolling Stone.