The 36-year-old judge could not believe that hopeful Christopher Preece had decided to sing Prince Ali from Disney’s Aladdin.
Stunning the audience, the 28-year-old audiobook narrator from Norfolk left Jennifer speechless, prompting her to ask: “Is this real?”
As Chris edged closer to finishing his rendition, Olly Murs couldn’t resist and pressed his buzzer.
Asked why he chose that particular song, Chris explained: “I do a lot of songs so I was like, ‘Could do something rock, could do something country,’ and then I was just like, ‘Oh yeah!’
“Honestly it really was. I just wanted to let the crowd have a good time and do a song that people love.”
He added: “Because that’s what I do!”
Hearing Chris explain why he chose the song, Jennifer gasped: “That was brave!
“You kind of took me back to when I worked on a cruise ship and broadway and everything else.
“I’m like, ‘wow’. I think it was brave that you did that, so job well done.”
Chris later took to social media to explain all of his audition day decisions.
He tweeted: “#thevoiceuk I wanted to do something fun! I think I managed that.
“#thevoiceuk I was so happy that @ollyofficial turned for me! I was already getting ready to leave the stage when he turned and I was just on an adrenaline high! #TeamOlly.
“I actually watched Aladdin the night before my audition! #thevoiceuk.”
He added: “I was nervous about the song choice but I just wanted to give people something they could enjoy.”
Sir Tom Jones revealed that he didn’t turn around due to not knowing how to work with his style of music.
However, Chris told how he can sing a range of tunes from different genres, leaving his new mentor Olly the envy of his rival judges.
The Voice UK 2018 continues next Saturday on ITV at 8pm.
