Many people want to be immortal in some sense, to leave a legacy, to create something that lives on forever. Maybe they do that by teaching their children recipes and traditions. Maybe they do that by starting a company or creating a product that outlives them. For entertainers, they do that through the entertainment they create.
While there are many entertainers that most of us have never heard of, there are many who are timeless. Marilyn Monroe comes to mind as does Michael Jackson, and we can definitely include the King of Rock and Roll on this list, Elvis Presley.