Kelly was in a relationship with Sian Prior, a journalist, university lecturer and opera singer, from 2002 to 2011. They met when Kelly was interviewed on her "Sunday Arts" ABC radio program. Kelly wrote "You're 39, You're Beautiful and You're Mine" for Prior who was already 40 by the time he finished. Prior has played clarinet and provided backing vocals on some of Kelly's songs, as well as with the Stardust Five. She has performed live with Kelly on several occasions including clarinet on six tracks of his "A – Z Recordings" boxed set. In his memoir, Kelly credited Prior with inspiring him to give up his long-term heroin addiction, "I got lucky, I met a woman who said: 'It's me or it'. She gave me the number of a counsellor ... I thought about 'it' every day for a long time. Less now". The couple had separated during the making of Kelly's biopic, however the separation is not mentioned and Prior is not interviewed in the film. According to Prior after a date in 2011, "came home. He sat on the bed. 'I've decided I want to be single again,' he told her. 'Yes, I have been with other women.'" The split occurred after she had filmed her interview and "after the breakup, [she requested the footage not be used. Her presence in Kelly's life is as a footnote in the credits. It's as if she was never there."