Start at about 2:30 in.
I am no big fan of America's Got Talent (I think that this year's winner cannot sing as well as I can -- I mean it), but I watched last night because I wanted to see Shakira and Susan Boyle.
Shakira was lip synching, but Susan Boyle was amazing. She might be a train wreck with a lot of baggage, but she can sing.
Back in the early 1970s when I was just a little kid this sort of TV performance was not unusual -- you dress up a female star in a designer gown and have her sing with an orchestra. I was amazed at how old fashioned the performance was, but, again, it was beautifully done.