Pokemon Rap
As far as I know, this is the theme song from the Pokemon show. Hearing the backwards message might not come easily, even when shown the "reverse lyrics", but give it a few tries and it's likely you'll hear it too.
Forward: 'Gotta catch 'em all, gotta catch 'em all (yo) Gotta catch 'em all, gotta catch 'em all (yeah).'
Reverse: 'I love satan. I love satan. I love satan, I love satan.'
As far as I know, this is the theme song from the Pokemon show. Hearing the backwards message might not come easily, even when shown the "reverse lyrics", but give it a few tries and it's likely you'll hear it too.