Claim: Frank Sinatra was one of the most well-known musicians of the 20th century.
Evidence: Francis Albert Sinatra -LRB- -LSB- sᵻˈnɑːtrə -RSB- -LSB- siˈnaːtra -RSB- ; December 12 , 1915 -- May 14 , 1998 -RRB- was an American singer , actor , and producer who was one of the most popular and influential musical artists of the 20th century.