Susan Boyle, 47, gave fans a treat on America's Got Talent, the States' version of Britain's Got Talent, which gave Boyle a platform to debut her powerful voice in 2009 when she sang "I Dreamed a Dream," from Les Miserables and promptly became a household name. On Wednesday's show, Boyle sang "You Have to Be There," the first single off her new album, "Someone to Watch Over Me."

The song, written by Abba's Benny Andersson and Bjorn Ulvaeus for their Swedish musical, Kristina, had never been performed on televison, and met with resounding praise from the audience.

"I'm so pleased the audience enjoyed the song," Boyle said after the rendition. "I really loved performing that big number. I was also a little nervous introducing something new. America's Got Talent — it's where I started with my first album, so it was wonderful to be back and for the support," she added.

Boyle's first album, The Gift, became the fastest selling debut by a female artist from the U.K. to date. Her new album will be released on November 1.

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