A lawsuit has been brought against Beyoncé, Jay Z and Timbaland by Hungarian singer Monika Juhász, who claims that they used her vocals without permission on Beyoncé's 'Drunk in Love'.

Juhász, also known as Mitsou, says that a sample of her voice is used for a minute and a half in the song.

"Mitsou's incredible voice is widely considered unique and ethereal, and since the 1990s, she has been in high demand for countless international collaborations as a featured guest singer, has never signed any documents that would permit anyone to use her voice for advertising or trade purposes…  and never granted any of the defendants permission to use her voice for any purpose," the lawsuit reportedly states. 

What's more, Roma singer Mitsou is irked by her voice being used "to evoke foreign eroticism alongside the sexually intense lyrics performed by Beyoncé and Jay Z."

The pair - or the song's producer, Timbaland - have yet to respond.