"It’s so hard to sing," he said then. "I had no idea. I just felt I would get fatigued at the end of even like a phrase."
"The amount of respect I have for singers, which I know is ridiculous because of course you should, but I’ve really been awakened to the phenomenon of singing," Cooper continued. "So I hope I can just be believable enough so that you can watch Stefani -- that’s her name, Gaga -- just shine 'cause she’s incredible."