Justin Bieber and Skrillex getting sued, may actually have to apologise for "Sorry"

"The writers, producers, and performers of ‘Sorry’ did not obtain a license for this exploitation of my work"

In an ironic turn of events, Justin Bieber and Skrillex may be forced to make a very expensive apology for their chart-topping track "Sorry."

The Canadian singer and American electronic music producer are both getting sued for copyright infringement by musician Casey Dienel of White Hinterland, who claims the song copied "unique characteristics of the female vocal riff."

Her track "Ring the Bell' prominently features the aforementioned riff which consists of three notes; the Bieber song "Sorry" features a strikingly similar vocal arrangement, seemingly separated only by an elongated third note.

You can compare the intro for the two songs for yourself above.

American singer-songwriter Dienel - who released her debut album Wind-Up Canary in 2006 - posted a statement on her Facebook page detailing her motive behind her actions.

Only last year, Bieber was sued alongside Usher by De Rico, an R&B musician who believed their song "Somebody To Love" had copied his own track of the same name.

The news was reported by Variety who has reached out to Bieber's attorney for comment.