London ? Surprise singing sensation Susan Boyle made a new television appearance Sunday, showcasing once again her soaring voice — but refusing to compromise on the frumpy look that made her an Internet sensation.

The shy church volunteer gave a rousing, but occasionally nervous, performance on the “American Idol”-style show “Britain’s Got Talent,” with a version of the song “Memory” from the musical “Cats.”

Members of the public voting in a telephone poll picked her as the best of eight performers who appeared Sunday, meaning she will sing again in the contest’s finale next Saturday.

Flashing a broad smile, Boyle danced in delight as results were announced and said she had relished the chance to perform. “Fantastic, absolutely fantastic,” she said. “What pressure? I’ve really enjoyed myself tonight.”

Wearing a plum colored beaded dress — and a touch more makeup than during her last performance — but with the same unruly shock of hair, Boyle overcame early jitters to deliver a powerful vocal.

Producers said the 47-year-old’s appearance was being posted on the Internet almost immediately, after about 60 million people watched her last performance via YouTube.

On Sunday, the show’s judges and audience rose to their feet to applaud, but those posting comments to the Twitter Web site appeared divided. While some hailed her performance, others appeared underwhelmed.