Original: Ronald Belford '' Bon '' Scott ( 9 July 1946 -- 19 February 1980 ) was an Australian rock musician , best known for being the lead singer and lyricist of Australian hard rock band AC/DC from 1974 until his death in 1980 .
Simplified: He was the lead singer of hard rock band AC/DC from 1974 until he died in 1980 .