A judge on the Indian version of The X Factor, Nigam recently caused controversy by voting out one of his own contestants.
Speaking to Digital Spy, he said: "I remember at the press conference for Indian X Factor, the press would ask 'Who is Simon Cowell?' And I said 'Why don't you ask Simon Cowell who is Sonu Nigam?' Every person in the world has their own temperament. I can't be Simon Cowell and he can't be me.
"You have to find your own identity. If you're not happy with your own self that's when you want to be someone else. So what I do in all the shows I have been a part of, I make those shows a part of me. I colour it my way."
The actor told Digital Spy how he defined the 'X factor': "You don't have to be the sexiest girl or the most talented person to have the X factor. X factor is something you are born with that is your own.
"A simple girl clad in a white sari, with long flowing hair, not dancing at all, is like an angel. She would probably have much more X factor than somebody in a bikini flaunting themselves. People who have the X factor know what they have."
The singer recently collaborated with Britney Spears on a remix of the song 'I Wanna Go'.
> Read Digital Spy's full interview with Sonu Nigam
Watch the music video for Britney Spears' 'I Wanna Go' featuring Sonu Nigam below: