will.i.am's tears during The Voice auditions

Rapper will.i.am and pop star Jessie J have been reduced to tears during auditions for the UK version of The Voice, according to the show's co-host.

The duo is part of the all-star panel, along with Sir Tom Jones and The Script frontman Danny O'Donoghue, and they've been filming the early rounds of the programme.

DJ Reggie Yates is co-presenting the BBC show, which is set to debut later this month, and he admits it's been an emotional time for those involved.

He tells Hello! magazine, "Everyone's getting on really well. Will.i.am talks in catchphrases, I want to be Tom's best mate, Jessie J has the weirdest warm-up exercises and everyone falls in love with Danny.

"Jessie cries a lot. But, surprisingly, Will has cried as many times."