The singer says during a plagiarism suit that he lied during interviews in 2013 in which he said he and Pharrell Williams wrote the song in "half an hour", claiming he was "drunk and high" throughout.

The controversy surrounding Robin Thicke and Pharrell Williams' international hit 'Blurred Lines' has continued today after Thicke was forced to backtrack on comments he made about the song last year, while testifying under oath during a plagiarism lawsuit.

The family of Marvin Gaye are bringing the lawsuit against Thicke and Williams, accusing the duo of plagiarising Gaye's song 'Got To Give It Up'. Thicke's comments to reporters about the song's inception is central to the case.

The singer previously stated to GQ: "I was like, 'Damn, we should make something like ['Got To Give It Up'], something with that groove. Then Pharrell started playing something and we literally wrote the song in half an hour and recorded it."

'Blurred Lines' also came under fire upon its release last year for what many people perceived to be its misogynistic lyrics. It also became the first song to be banned from Belfast's Queen's University in the institution's history.

Speaking about the song in deposition documents published by the Hollywood Reporter, Thicke said that, contrary to quotes published in interviews, the song was principally Pharrell's work.

"The record would have happened with or without me", Thicke explained. "None of it was my idea. I was drunk...[and] I'd say 75 percent of it was already done when I walked in."

"After making six albums that I wrote and produced myself, the biggest hit of my career was written and produced by somebody else and I was jealous and I wanted some of the credit", Thicke says in his deposition.

"When I give interviews, I [say] whatever I want to help sell records".

Thicke also stated that he was drunk on vodka and high on vicodin pills while making comments about the song in interviews.

Information from the deposition also states that Thicke receives just 20% of the song's publishing rights, a figure which he says is down to Williams' "generosity" and "[I get a larger percentage of publishing than I deserve".

Williams' own deposition confirms this. In it, he says: "[Robin is] a friend of mine and I'm not trying to, you know, belittle his character in any way, shape or form. But this is what happens every day in our industry ... People are made to look like they have much more authorship in the situation than they actually do."

Pharrell goes on to say that Thicke's only input in the song was marginal. "He didn't walk in and ask me for anything because he was late that day", Williams said.

The trial is set to get underway on February 10th next year.

More: Robin Thicke sells just 530 copies of his latest album

via Guardian