Born in Sanary-sur-Mer, Ernest Blanc studied at the Music Conservatory of Toulon with Sabran, from 1946 to 1949. He made his debut in Marseille, as Tonio, in 1950. He then sang throughout France in the French and Italian repertories.
In 1954, he made his debut at the Palais Garnier in Paris, as Rigoletto, he sang there as first baritone for 25 years in a wide repertoire (Rameau, Mozart, Gounod, Bizet, Massenet, Verdi, Puccini, etc.). He also appeared often at the Opéra-Comique, and was a regular guest at the Aix-en-Provence Festival.
His career took an international turn in 1958, with debut at the Bayreuth Festival, followed by debuts at La Scala in Milan, the Royal Opera House in London, the Glyndebourne Festival, the Vienna State Opera, the Salzburg Festival, La Monnaie in Brussels, the Grand Théâtre de Genève, the Monte Carlo Opera, the Teatro Nacional Sao Carlos in Lisbon, the Liceo in Barcelona, the Berlin State Opera, etc.
Notable roles included; Don Giovanni, Valentin, Zurga, Escamillo, Golaud, Germont, Renato, Amonasro, Scarpia, Riccardo in I puritani, opposite Joan Sutherland, Alfonso in La favorite, Wolfram, Telramund, etc.
A stylish singer and a fine musician, he possessed a beautiful voice with a brilliant upper register and impeccable diction, one of the few post war French singers to have enjoyed a truly international career. After his retirement he taught in Paris.
- 1958 - Gounod - Faust - Victoria de los Angeles, Nicolai Gedda, Ernest Blanc, Boris Christoff - Choeurs et Orchestre de l'Opéra de Paris, André Cluytens - (EMI)
- 1959 - Bizet - Carmen - Victoria de los Angeles, Nicolai Gedda, Janine Micheau, Ernest Blanc - Choeurs et Orchestre de la RTF, Thomas Beecham - (EMI)
- 1960 - Bizet - Les pêcheurs de perles - Janine Micheau, Nicolai Gedda, Ernest Blanc, Jacques Mars - Choeurs et Orchestre de l'Opéra-Comique, Pierre Dervaux - (EMI)
- 1962 - Saint-Saëns - Samson et Dalila - Jon Vickers, Rita Gorr, Ernest Blanc, Anton Diakov - Choeurs René Duclos, Orchestre de l'Opéra de Paris, Georges Prêtre - (EMI)
- Le guide de l'opéra, Mancini & Rouveroux, (Fayard, 1986), ISBN 2-213-01563-5