Fighting for a spot in the live final next week, 18-year-old Becky performed Like A Star by Corrine Bailey Rae.
"I think this is the first time I finished a performance when I'm not hyper!" Becky said afterwards.
Danny O'Donoghue commented: "I thought your voice was amazing but my critique would be on song choice, I would've picked a song everybody knows. I don't know that song, but I thought it flawless vocally."
Sir Tom Jones added: "Light and shade, Frank Sinatra told me to show all sides of yourself. You surprised me tonight, you have a lovely tone to your voice, I loved it."
Finally, Becky's coach Jessie said: "I think it's important to sing songs people don't know because they do now. I think every week you've shown your power and now you're showing your tone which I don't think anyone else in the competition has."
Watch [tag]Becky Hill[/tag] on The Voice UK semi-finals below...