Claim: 4 musicians formed Black Sabbath.
Evidence: Black Sabbath were an English rock band , formed in Birmingham in 1968 , by guitarist and main songwriter Tony Iommi , bassist and main lyricist Geezer Butler , singer Ozzy Osbourne , and drummer Bill Ward.
William Thomas `` Bill '' Ward -LRB- born 5 May 1948 -RRB- is an English musician and visual artist , best known as the original drummer of the British heavy metal band Black Sabbath.
Terence Michael Joseph `` Geezer '' Butler -LRB- born 17 July 1949 -RRB- is an English musician and songwriter.
John Michael `` Ozzy '' Osbourne -LRB- born 3 December 1948 -RRB- is an English singer , songwriter , and actor.
Anthony Frank `` Tony '' Iommi -LRB- -LSB- aɪ ` oʊmiː -RSB- born 19 February 1948 -RRB- is an English guitarist , songwriter and producer.