Can anybody tell me the original singer of Cristiano Ronaldo's Amor Mio song?

Today i read Yahoo news and saw that Cristiano Ronaldo sang a song entitled "Amor Mio" for a tv advert. I loved the melody of this spanish song. I am not Spanish and i don't speak spanish. I went to look for the original singer and is the original singer Camilo Sesto? Because when i went to YouTube and typed in Amor Mio Qu� Me Has Hecho by Camilo Sesto the song sounded totally different in tune from the one that Ronaldo sang. I even listened to the chorus and it wasn;t the same.I know the one Ronaldo sang was a short version of a song. Can anyone also tell me where to get the complete Spanish lyrics and the English lyrics and where to listen to the FULL song? Please help me. I really love this tune.