Kylie Minogue says she has had some sleepless nights recently as she considers her strategy on The Voice.

The Aussie singer has signed up to appear as a coach on the TV show's third series, which began on the BBC on Saturday (January 11).

She told the Daily Star, however, that she often finds it hard to focus on her normal life after leaving filming for The Voice:

"It's really hard to switch off when you leave the studio. You become so invested in the acts. My sleep gets interrupted because you know you have to make decisions the next day and you don't want to.

"Some parts of being a coach are great. But then there are sticky moments when it doesn't matter what decision you make, it isn't going to be any fun. And then you think about it later on and wonder if you made the right decision."

Minogue meanwhile recently announced that she will be releasing her new single 'Into The Blue' on March 16.

Fans, however, will be able to hear the track from January 27.