Last October (2013), Marvin Gaye's children filed a lawsuit against Robin Thicke for allegedly stealing 'Blurred Lines' from their father's 'Got To Give It Up' as well as committing copyright infringement on his 'After the Dance' to create Thicke's song, 'Love After War'.

Robin Thicke
Thicke revealed he suffered from substance abuse issues last year

The court deposition for this case, obtained by The Hollywood Reporter, reveal that not just the supposed origins of 'Blurred Lines' are controversial, but the way in which Thicke took credit for the song is inaccurate.

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"I was high on Vicodin and alcohol when I showed up at the studio," he said in the deposition, while responding to question about creating the song. "My recollection is when we made the song. ... 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."

Adding, "But the reality is, is that Pharrell had the beat and he wrote almost every single part of the song."

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The 37 year-old singer also admitted he was "high and drunk" in nearly all interviews he did last year, confessing, "I had a drug and alcohol problem for the year and I didn't do a sober interview. So I don't recall many things that I said."

Robin Thicke
Thicke's drug and alcohol issues led to the demise of his marriage

Thicke's issues with substance abuse eventually led to the demise of his marriage with actress Paula Patton, they announced their separation in February of this year.

"I told my wife the truth, that's why she left me," he continued. "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."