Guess the name of musician

A little boy opened the large old family Bible, and he looked with fascination at the ancient pages as he turned them one by one.
He was still in Genesis when something fell out of the Bible. He picked it up and looked at it closely. It was a very large old tree leaf that had been pressed between the pages of the Bible long ago."Momma, look what I found!" the boy called out.
"What do you have there?" his mother asked.
With astonishment in his voice, the young boy answered, "I think it's Adam's underwear!"