Rated one of rock's most powerful vocalists, [Dio] rose to fame in the mid-1970s as lead singer of Rainbow, before replacing Osbourne in Black Sabbath in 1980. Later that year the band released their ninth studio album, Heaven And Hell, considered by many fans as one of the greatest heavy rock LPs of all time. Dio's solo hits included Rainbow In The Dark, The Last In Line, and Holy Diver. 
Ronnie James Dio was a heavy metal singer who died of stomach cancer.
- Rainbow was a rock band the 1970s that was fronted by Ronnie James Dio.
- Black Sabbath is a heavy metal band from England. Ronnie James Dio later joined Black Sabbath. 
- Dio was a heavy metal band that was fronted by Ronnie James Dio.