Graciela Rivera year she made her operatic debut as Rosina in "The Barber of Seville" by Gioachino Rossini at the New Orleans Opera. In December 1951, she became the first Puerto Rican to sing a lead role at the New York Metropolitan Opera as Lucia in the production of Lucia di Lammermoor. She earned accolades for her performance from critics around the world. In 1953, Rivera was proclaimed "Citizen of the Year" by the City of New York. In 1954 Rivera was featured as a guest singer in Name That Tune, and later that year, at an instance of Your Show of
Gioachino Rossini had three years of instruction in the playing of the harpsichord from Giuseppe Prinetti, originally from Novara, who played the scale with two fingers only; Prinetti also owned a business selling beer and had a propensity to fall asleep while standing. These qualities made him a subject for ridicule in the eyes of the young Rossini. He was eventually taken from Prinetti and apprenticed to a blacksmith. In Angelo Tesei, he found a congenial music master, and learned to sight-read, play accompaniments on the piano and sing well enough to take solo parts in the church when he was ten