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Susan Boyle Sings at Papal Mass in Scotland

Susan Boyle performs on stage ahead of Pope Benedict XVI's arrival at Bellahouston Park, Glasgow, Scotland, Thursday Sept. 16, 2010. (AP Photo/Scott Heppell) SCOTT HEPPELL

GLASGOW, Scotland (CBS) Scottish singer Susan Boyle, who got her start singing in church choirs, performed for Pipe Benedict XVI Thursday for the crowd of 65,000 at Bellahouston Park in Glasgow.

Boyle, the unlikely pop star who shot to global Internet fame after she sang on the TV show "Britain's Got Talent," said it was a dream come true.

Pictures: Susan Boyle

"It's something I've always dreamed of, it's something I've always wanted to do, and here I am, finally getting the chance," Boyle told Sky News.

Besides performing her now-iconic rendition of "I Dreamed a Dream" from "Les Miserables" at the Mass, she sang two hymns, How Great Thou Art" and "Make Me a Channel of Your Peace." An 800-strong choir also performed.

Benedict is in the second day of a four-day state visit to Britain that included a meeting with Queen Elizabeth II at Holyroodhouse Palace in Edinburgh. British police arrested five London street cleaners over an alleged threat to Pope.