Who wrote the song Mercy Mercy Me?

"Well! It is a weeping and a moaning, and a gnashing of teeth. It is a weeping and a moaning, and a gnashing of teeth. When it comes to my sound, which is da champion sound, believe, believe!"

These lyrics are basically describing Hell and the 'Believe' is referring to believing that the Devil is the champion over God - If I were you, I'd check into this song before listening to it ; just saying. After discovering the true meaning behind it, I never listen to it anymore.