Among Lanza's formative musical influences were Enrico Caruso, Aureliano Pertile, and Beniamino Gigli.
At sixteen Lanza discovered that he possessed a potentially great tenor voice of his own when his parents arranged for him to sing for retired baritone Antonio Scarduzzo. Highly impressed, Scarduzzo nevertheless urged the young tenor to delay actual singing lessons for two years. In the meantime, Scarduzzo recommended, Lanza should study solfeggio (sight reading), languages and piano.
As biographer Armando Cesari notes in this speech, "The path to a successful career [was thereafter] relatively easy for Lanza. ... He started working with a coach [the former soprano Irene Williams] at the age of 19. Two years later, he auditioned for Serge Koussevitzky, the great conductor of the Boston Symphony, who immediately awarded him a scholarship to study in Tanglewood, the summer home of the Boston Symphony. Lanza made his debut as Fenton in The Merry Wives of Windsor to rave reviews, but shortly after his studies were interrupted [by World War II], and he was inducted into the Army for the next two years." While still a soldier (performing in Special Services), Lanza was courted by RCA, who subsequently signed him to an exclusive recording contract. The young tenor also signed with Columbia Artist Management, who would handle his subsequent concert and opera appearances following his discharge from the Army in January 1945.