For 37-year-old mother Rachael Wooding, taking the stage at “Britain’s Got Talent” should have been a piece of cake. She had a long history of singing in musical theater, after all. But, when she stood up in front of millions of viewers, no one would have blamed her for being a bit nervous.

When she opened her mouth, though, her version of “With You” from the movie “Ghost” was so magical, it took everyone’s breath away.