"I've never written a song in my life. It's all a big hoax"

In this quote, Elvis Presley is revealing his disbelief and surprise at the fact that he has actually never ever composed a tune in his whole life. He is essentially admitting that he has been deceiving his fans and the music industry by taking credit for tunes that he did not in fact compose. By calling it a "big hoax," he is acknowledging that he has actually been misleading individuals and perhaps even feeling a sense of regret or embarassment about it. This quote clarifies the pressure and expectations placed on stars to be multi-talented and associated with every element of their craft, even if it means pretending to have skills they do not have.