Yes no more ‘Paranoid’ and ‘Bark at the Moon’. Goodbye Ozzy, you will be remembered for your music and much much more. The bat, the 17 cats and the hens will be waiting to meet you up there. On earth, Black Sabbath will never be the same.
Black Sabbath practically started the "metal" genre; later as "solo" (well actually Ozzy Osborne band), he worked with the best of the guitarists!
I haven't heard anyone else having chorus effect in his singing voice.