The stylish star, who sported a large 50s style quiff on stage, performed Adele's Set Fire To The Rain during his audition.
Sir Tom Jones was the first and only coach to turn around during the performance, which seemed to please the 20-year-old.
"There were a few notes in there that sounded like me," Sir Tom said, "You've got a great voice."
Danny O'Donoghue was surprised to find out it was Sam on turning around, remarking: "I really thought you were going to be a girl!"
Watch Sam Buttery's blind audition for The voice UK below...