Did you know that a hidden microphone was placed on the set of 'The Voice'? Well, apparently it was. Just take a look - and listen - at the video above.
As YouTuber Ryan Williams says - it certainly explains Will.I.am and Jessie J's strange behaviour in blind live auditions.
Mind you, if you think the video above is slightly alarming, just check out the reception Iain Duncan Smith got when he appeared on the show:
(Via The Poke)