Michael Jackson is officially a baritone, yet his singing range contains the full tenor and countertenor registers too. He could even dip into the soprano and bass realms, flaunting a remarkable 3-octave range. While he often dazzled fans with his higher notes during performances, he kept his rich, deep voice exclusively for his private life and business situations. In public, he gravitated towards a mid-range sound as time went on, yet he never once slipped up and used his real deep voice (as far as we have researched, please correct us if you know otherwise).