Rosa Blasi was born in Mt. Prospect, Illinois to Marvin and Millicent Blasi. Blasi speaks fluent Italian and is classically trained as a mezzo soprano. She also comes from a strong theatre background, having performed for more than 40 professional productions beginning at age eight; ranging from comedy at the esteemed Piven Performance Company, as well as The Second City, to starring in numerous musicals and touring with Barry Manilow.