Bellion was born and raised in Lake Grove, New York. He is of Italian descent, and his family comes from Naples. Torn between his love for basketball and music throughout high school, Bellion made the choice to pursue his music career in his junior year. After high school, he enrolled in the music program at the private Five Towns College in Dix Hills, New York. At the age of 19, he decided to drop out of college and focus on writing professionally. He worked under songwriter and Warner Brothers A&R executive Kara DioGuardi for a year and signed a deal through her personal publishing company. Through this experience, Bellion learned how to write songs for different artists, in genres such as rock and hip hop.
