Why has Susan Boyle become a star?

Answer 1

Because she has an outstanding singing voice, and she made a promise to her late mom that she would try to become a professional singer despite her past attempts on a smaller local forum in her village which never catapulted her into stardom as BGT has.

Answer 2

Only Susan Boyle can answer this question, but she probably sang it because it was her dream to become a professional singer and that song reflects that dream.

Answer 3

Because she sings inspirational songs - very well.

And she is an example showing that it is never too late for someone unknown to become very famous.