Here's a fantastic look at a very early Sonny & Cher.
http://youtu.be/kj-8nU2BFW4I think this video shows an interesting truth about the duo.
The song is 50 years old. Unbelievable. I think this somewhat overproduced video clip is from 1965.
People wonder why an untalented singer like Sonny would have been paired with the extremely talented Cher. I think you can see it in this video. Cher had crippling stage fright...seems impossible to believe now but it's true. Sonny was a succesful and respected record company executive and producer. He wasn't a performer. But his presence had a calming effect on Cher and made it much easier for her to sing in public. So they teamed up with Sonny's job to enable Cher's performance.
In this video, I think you can see that young Cher is just on the edge of discomfort. She doesn't look confident. She looks like somebody who needs some hand-holding.