Claim: In the year 1974, Bon Scott became AC/DC's lead singer.
Evidence: Ronald Belford `` Bon '' Scott -LRB- 9 July 1946 -- 19 February 1980 -RRB- 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.