The singer wowed the judges on this year's opening show, performing an emotional cover of Adele's Make You Feel My Love.
The 19-year-old is now preparing to take part in tonight's latest live semi final, but admits: "I did [BGT] to get a professional opinion on my vocals, and didn’t expect to get through or anything!"
Understandably, Sam is quite nervous: "I've never played on live television before! Simon is a bit intimidating, and he seemed to like my audition so I hope that I can justify their decision to put me through."
And if he won the £500,000 prize money? Sam says: "I'd love to do something to get more kids into music at my high school and where I come from in Norfolk - it was quite lonely being one of the only serious young musicians around."
He adds: "I'm just trying to do my own thing and make music because I love doing it. I feel a lot of people nowadays forget about the music and focus more on trying to make money. I would love to win but only if I can succeed playing the music that I love to play.