The pizza restaurant waiter managed to get Will.i.am to press his buzzer within seconds, while Sir Tom Jones also turned around moments before Jay's blind audition finished.
The Welsh singer told him: "I thought it was great, I loved the whole song. I need a man with a strong voice on my team and you're it as far as I’m concerned."
Will.i.am argued: "I turned around 5 seconds because I heard it. I know what I’m looking for and it hit my ear like ‘That’s it!i'."
He added: "You the bomb."
Deciding between the pair, Jay said: "I think I’m gonna have to go with Will!"
Watch [tag]Jay Norton[/tag] on The Voice UK below...