Susan Boyle leaves the National Indoor Arena after appearing on stage
Susan Boyle has appeared on stage as part of the Britain's Got Talent live tour's first night in Birmingham.
The singer performed I Dreamed A Dream and Memory from the musicals Les Miserables and Cats respectively at the city's National Indoor Arena.
Doubts had persisted over the 48-year-old's fitness to perform after she became ill with exhaustion.
She went on to receive a standing ovation when she sang at the matinee show in Sheffield on Saturday.
The singer received a mixed reaction when she took to the stage at Sheffield's Hallam FM Arena, with some booing from the crowd.
But despite faltering during her performance of Memory, she finished to rapturous applause.
On the tour's opening night on Friday, the singer was introduced to the stage by ITV2's Britain's Got More Talent presenter Stephen Mulhern, who described Ms Boyle as being "famous all over the world."
He added: "She's so famous even her pet cat Pebbles is famous."
A tour spokeswoman only confirmed she would sing shortly before the show started.
There had been concerns about her health following her admission to the Priory clinic with exhaustion after she came second in the ITV1 contest.
Boyle's spokeswoman had earlier said it was the star's decision whether she would perform and that she was under no pressure to agree.
Her brother Gerry told the BBC she had been "showing signs of anxiety".
The singer, from West Lothian, shot to fame after surprising the show's judges with her rendition of I Dreamed A Dream in her first audition.
Since then the clip has been watched millions of times on the internet.
She has appeared on various US TV programmes, including Oprah Winfrey's talk show.
However, the pressure on the former church volunteer seemed to have taken its toll after she was admitted to the private clinic, where she stayed for five days.
The arena tour, which will travel across the UK until the end of June, showcases winning act Diversity plus the other nine finalists, including Boyle.