"Thank you so much for singing and dancing all night long. I'm sorry my mic was broken for a second," she said. "At least you know I sing live. And I guess all we can do is our best, right?

Keep the party going with the best karaoke machines. After research and testing, our picks include models from Tonor, ...

As she descended an elaborate stage set, one of her dancers offered her a handheld mic as a replacement. Through it all, Gaga continued singing without missing a beat. Later in her set ...