AceShowbiz - Marie Osmond was forced to halt a U.S. TV performance of opera classic "Pie Gesu" after becoming so overcome with emotion as she dedicated the song to her late son. The veteran star opened up for the first time about the tragic suicide of her 18-year-old son Michael Bryan earlier this year during an emotional interview with Oprah Winfrey, which aired on Thursday, November 11.

She took to the stage at the end of the chat to perform the song in memory of the teen, but failed to keep the tears from falling as she belted out the tune. As her voice faltered a few lines into the song, Osmond held up her hand, instructing the band to stop the music, and turned around as she took a few seconds to compose herself.

She apologized to the audience, telling them, "One more time, sorry," and took a deep breath before saying, "OK, here we go", and relaunching into the song once again. And her efforts were well received - her determination to finish the track earned her a standing ovation from Winfrey and the studio audience.

In the same occasion, Marie Osmond refused to address allegations she became a victim of domestic abuse during her 21-year marriage to Brian Blosil, insisting she has to "move forward" from the "pain" and "sorrow" of the union. The singer announced she was divorcing record producer Blosil in 2007 and tabloid reports have since claimed the relationship was tainted by episodes of violence.

Osmond has remained silent about the rumors and she maintained her position when she was quizzed about the gossip during a candid TV interview with Oprah Winfrey. She admitted the relationship had been a troublesome one, but stopped short of going into detail about the specific problems that spelled the end of her second marriage.

She said, "I had a very bad marriage, a lot of pain, a lot of sorrow. A lot of trying, a lot of effort, but you can't sit in something, you have to move forward. I really think at this point, with my children - I still have four children at home - you have to move forward. I will say this - as you move into a second marriage, for me, I was just really, really, really, really, really tired when I made my decision. You marry at the level of your self esteem; make sure you have self worth."

During the interview, Osmond revealed her late son Michael Bryan, who committed suicide in February, had urged the star to step back onto the dating scene so she could find happiness. But she confessed she wasn't ready to begin a new romance just yet. She told Winfrey, "He said, 'Mum, I want you to find a good man.' ...I don't know that I'm ready for that but he knew that walking through life alone was hard. He wanted me to be happy..."