Robin Thicke's lawyer believes the singer is being "exploited".

After some of the shocking statements he made in a deposition - including that he was "high" when working on the song and during every interview he gave last year - were made public, his attorney claims they have been leaked to distract from the "weak" legal claim.

The lawyer, Howard King, said in a statement: "Robin's moment of personal vulnerability is being exploited in the hope of diverting attention from the obvious weakness of their legal claim."

Among the extracts from the deposition, which was obtained by The Hollywood Reporter, Robin admitted under oath he remembered very little about recording the track.

When asked where he was when the track was created, he said: "To be honest, that's the only part where -- I was high on Vicodin and alcohol when I showed up at the studio.

"So my recollection is when we made the song, I thought I wanted -- I -- I wanted to be more involved than I actually was by the time, nine months later, it became a huge hit and I wanted credit. "So I started kind of convincing myself that I was a little more part of it than I was and I -- because I didn't want him -- I wanted some credit for this big hit.

"But the reality is, is that Pharrell had the beat and he wrote almost every single part of the song." The star also admitted that his drug and alcohol abuse had caused the breakdown of his marriage with Paula Patton, whom he married in 2005, earlier this year, and says their split prompted him to get sober.

He said: "I told my wife the truth. That's why she left me...

"I've been sober for the last two months...When your wife leaves you, it gives you a good reason to be sober. I've actually only been sober off the pills, off of Vicodin. I still drink."