Born on December 12, 1915, Francis Albert Sinatra was born in a tenement in New Jersey, the son of Italian immigrants.
As a baby, Sinatra experienced a perforated eardrum, however this didn't stop him from developing one of the best ears for music in the world.
During his childhood, his parents ran a tavern (illegally) where he would sing for extra pocket money. Sinatra loved to listen to the radio and try to emulate his idol, Bing Crosby.
Though his parents recognized his talents, they tried to encourage their son to follow a more traditional career.
At high school, the singer was expelled for general rowdiness - this was the first sign of his bad-boy ways, Sinatra was later arrested for adultery, but released soon after.
By 1935 he got his first break as the lead singer of local quartet The Hoboken Four.
Sinatra famously said, "People often remark that I'm pretty lucky. Luck is only important i so far as getting the chance to sell yourself at the right moment. After that, you've got to have talent and know how to use it."
As fans will know, Frank Sinatra then went on to become one of the world's greatest musicians and actors in history.