Johann Jonatan Björling was born in Stora Tuna, Sweden, on February 5, 1911. His father, David Björling, was also a tenor. He, his father, and two brothers (Johann Olof [1909-1965]; and Karl Gustav [1912-1957] made tours beginning in 1916 as the Björling Male Quartet. The three boys went by the nicknames "Jussi, Olle, and Gösta." All three brothers, and even their younger brother Karl David ("Kalle," [1917-1875]) had singing careers. The Björling Male Quartet toured the United States from 1919 to 1921, and then returned to Sweden, remaining active until 1926. His voice remained strong and clear when it made the transition to tenor, suggesting intelligent coaching and training in technique from his father.