The Voice UK coach Will.i.am has said that Sir Tom Jones and his team is the biggest competition for him.
Speaking after the first episode of blind auditions at the weekend, Will said he feared the artists in Sir Tom's group, and would be working hard with his own acts ahead of the live shows later this year.
The BBC One series sees each of the four coaches - who also include Jessie J and Danny O'Donoghue - pick a team of 10 singers to take through to the battle rounds.
"I think I have about four people who are really big, out of the ten in my team — four big global artists," Will said recently.
He added: "Out of all the singers, I am nervous about Tom's team. Me and my team, we have a lot of homework to do for the real live battles."
The Black Eyed Peas front man reckons that viewers will be voting purely based on talent on the BBC show, unlike The X Factor where 'joke' acts often continue to stay in for weeks on end.
The Voice UK live shows start in April on BBC One.