Mayer admits Perry duet doubts
John Mayer has admitted he had doubts about recording a duet with his girlfriend Katy Perry.
The couple, who have been dating on-and-off since August 2012 have collaborated on his latest single Who You Love.
But John confessed to US radio station z100: "I had this idea that just sat around for a while and I thought, 'Maybe I'll finish it some day' and I played it for Don Was who was producing the record with me and he said, 'Get Katy to sing on it'.
''Now, he could say that because he doesn't have to worry about all the hang ups that I'd have to worry about.''
But John insisted the recording had been strictly professional, although he revealed they had to adjust to each other's working styles.
He added: ''She was an artist in the studio and partner out of the studio. It was really professional.
''There was a moment where she was like, 'Let me just go through it once', and the way I work is, 'Let's get this and that and that' and she was like, 'Let me try it my way.'
''We were just fine before we met each other, that's what we say - 'You were fine before I met you, you don't need my advice,' and vice versa.''