1927 – Born in Las Palmas de Gran Canaria, Gran Canaria, Spain on the 24th of September.
1956 – Kraus made his professional operatic debut in Cairo as the Duke in Rigoletto, which became one of his signature roles.
1958 – He sang Alfredo at the Teatro Nacional de São Carlos in Lisbon in a production of La Traviata with Maria Callas, a live recording of which was later released.
1959 – Kraus made his Covent Garden debut as Edgardo in Lucia di Lammermoor.
1960 – His La Scala debut as Elvino in La Sonnambula.
1962 – He made his U.S. debut with Lyric Opera of Chicago.
1966 – His Metropolitan Opera debut in Rigoletto.
1991 – Kraus was awarded the Prince of Asturias Award.
1999 – Died on the 10th of September in Madrid, at the age of 71, after a long illness.