12-year-old Thalia, who will compete in the live semi-final, suggested that she deserves to win the contest because she makes unexpected musical choices for her age.
"My style of music is so different," she said. "I like to sing and perform songs that no one would expect to come out of a 12-year-old's mouth!
"I also think I deserve to win because I am so dedicated. I practise all the time and not because I have to, but because it's the biggest dream of mine. I love it so much, and I want it so badly!"
Thalia recently wowed judges with her rendition of Soulja Boy's 'Turn My Swag On'.
Asked who her favourite past Britain's Got Talent act was, she replied: "It would have to be Diversity because they were so surprising and inspiring.
"They were so slick and polished, and had some really unusual and crazy ideas to incorporate in their dance; it made them so much fun to watch!"
Thalia has been a solo performer for 18 months. She regularly performs at open mic nights in her local area, and in 2010 she won the under 18s prize at Festival Factor in Basingstoke.
The semi-finals begin today (May 6) with a two-hour special, with one episode then airing daily until Thursday (May 10).
Each day will feature nine acts performing live for judges Simon Cowell, Alesha Dixon, Amanda Holden and David Walliams.
> 'Britain's Got Talent': Who are the semi-finalists? - pictures