Black Eyed Peas hitmaker Will.i.Am has opened up about the TV vocal talent show he coaches on, 'The Voice', and what it will mean if tonight's winner doesn't become a star.

The 'Boom Boom Pow' sensation is currently mentoring favourite to win Leah McFall and explained that if this evening's (June 22) victorious finalist doesn't make it big, he will think the programme is a waste of time:

"These shows render themselves pointless if they can't identify something that's going to be on the radio and that's just me being part of the show. So we spend all this time looking for somebody and they aren't on the radio?"

"In my opinion after the show is finished everyone should be scrambling, just like they were scrambling to find the next singer, just to make sure the person who won has a chance, has a shot, at the radio. Because that's what the premise is, the premise isn't just a record deal, the premise is a career."

Writing on his official Twitter page earlier this afternoon, Will.i.Am encouaged viewers to vote for his contestant: "Everyone that bought @leahmcfallmusic songs on itunes please vote for #leahTOwin tonight on #theVOICEuk."

Watch McFall perform on a recent episode of 'The Voice' here: