Michael Jackson’s former doctor Conrad Murray appeared on CNN on Tuesday in his first interview since he was convicted with involuntary manslaughter in 2011.

In an effort to describe his childhood to host Anderson Cooper, Murray broke into song, chiming the lyrics to “The Little Boy that Santa Claus Forgot.”

“I’m so sorry for that laddie, he hasn’t got a daddy,” Murray sang, followed by an explanation tying his connection to the song: “I had no toy, I had nothing, I walked destitute for years but as I grew up my heart has been whole.”

Murray is currently in jail serving a four-year sentence after his 2011 conviction, a case in which he believes he was denied “due process.”

Still, Jackson’s mother, Katherine, is now suing AEG – the company that produced Michael’s last tour – for $40 billion and filing claims that they were negligent for hiring Murray as Michael’s physician.

In response to the suit, AEG claims it was Michael who insisted on having Murray as his doctor and are expected to argue that he was not their employee.

Now, over two years since the King of Pop’s death, the wrongful death trial with AEG began yesterday.

As for Murray, he continues to argue his innocence, claiming that he followed proper protocol when performing surgery on Michael.

“I did everything when I discovered Michael in his condition, to try to help him,” he told Cooper.

“At this time I have not been subpoenaed and I am not interested in giving a testimony during the trial,” he added.

Prior to his interview with Cooper, Murray spoke to the media for the last time before he was sentenced in a taped interview with NBC’s Savannah Guthrie.

Murray told Guthrie, “I don’t feel guilty because I did not do anything wrong.”

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