Christina Aguilera: 'I have no free time'

Christina Aguilera has no time to herself due to the success of 'The Voice'.

Christina Aguilera has no "free time" due to 'The Voice's success.

The 'Your Body' singer - who mentors on the show alongside Cee Lo Green, Adam Levine and Blake Shelton - admits she only took the job initially because it meant she could be close to her four-year-old son Max, and was not expecting it to be as big as it has become.

She said: "I thought, 'It'll keep me close to my son Max in Los Angeles. I don't have to travel. Then it kind of took off and there goes my free time!"

The 31-year-old star claims the show is different from its rivals such as 'X Factor' and 'American Idol' because it does not "poke fun" at the talent and tries to promote it.

Speaking on the KIIS FM, she said: "We were all sort of holding hands together and jumping off the cliff saying, 'We believe in this concept.' I think executive producer Mark Burnett really helped us all sort of understand that this wasn't something to poke fun at people. This was about promoting true talent and supporting that. We can poke fun at each other, but you know, we're not into trying to do that to people on stage.

"We four as artists know what it's like to have these tours, to go to these awards shows, what it takes to have the guts to go up there and perform, and it can be nerve-racking. We're all in support of that."