Dion was born to an Italian-American family in the Bronx borough of New York City. As a child, he used to accompany his father, a vaudeville entertainer, on tour, and developed a love of country music – particularly Hank Williams – and the blues and doo-wop stars he heard in local bars and on the radio. His singing abilities were honed on the street corners of Crotona Avenue, where he rounded up other local singers inventing acapella licks, and in local clubs.