Dr. Luke has responded to Kelly Clarkson's claim she was "blackmailed" to work with him and he was a hard person to collaborate with.

Dr. Luke

Dr. Luke

Last month, a court ruled that pop star Kesha must abide by her contract with Sony Music and Dr. Luke, despite her allegations that she was sexually abused by the record producer, and earlier this week Kelly came out to say she thinks the producer is "not a good person".

Kelly never suggested Dr. Luke ever behaved in a sexually inappropriate way with her but claimed when they recorded 'Since You've Been Gone' and 'Behind These Hazel Eyes' together he was "difficult to work with" and "kind of demeaning" and someone who has "lied a lot".

Now a spokesperson Dr. Luke - who runs Kemosabe Records for Sony Music - has responded to Kelly's accusations by quoting and extract from Sony Music chief Clive Davis's 2013 memoir 'The Soundtrack of My Life' which explains how Dr. Luke and Kelly came to make music together.

The book's text reads: "As Kelly was beginning to work on her second album, a song came in for her to do for the soundtrack of the 2004 film 'The Princess Diaries 2: Royal Engagement', which Whitney Houston has con-produced."

Clive also claims in the tome that Kelly wasn't keen on "taking direction" in the studio.

The chapter continues: "The fact is that I wanted Kelly to have those songs for the very reason he had written them. Both songs had a sharp rock edge, but were still capable of being pop hits. They would push Kelly in a promising direction for her, while maintaining and even growing her audience. Max and Luke are very strong, hands-on producers in the studio. They are intent on getting perfect vocal performances, and are relentless in that pursuit. It was hard for Kelly, who had come from the high of winning 'American Idol' and then having a double platinum album. But then suddenly you are in an entirely different world of making records in a studio, and you have to take direction. Kelly didn't like that."