Hugues-Adhémar Cuénod (French pronunciation: [yɡ kɥeˈno]; 26 June 1902 – 6 December 2010) was a Swiss tenor known for his performances in international opera, operetta, both traditional and musical theatre, and on the concert stage, where he was particularly known for his clear, light, romantic and expressive poised interpretation of mélodie (French art song). His repertoire encompassed everything from the medieval chansons of Guillaume de Machaut to the avant garde works of Igor Stravinsky, as well as recordings of lute songs. Cuénod contributed to the revival of baroque music, performing compositions by Francesco Cavalli and others. A distinguished singer of Johann Sebastian Bach's music, he was particularly praised for his interpretation of the Evangelist in Bach's St Matthew Passion. He had the longest career of any recorded vocalist or performer in history: he gave his first concert in Paris in 1928, aged 26, and his last in 1994, when he was 92. He was as fluent in English, German and Italian as he was in his native French.
Cuénod was born in Corseaux-sur-Vevey, Switzerland. His grandfather was the mayor of Corseaux and he had English ancestry through his grandmother. In 1913, aged 11, he attended the 78th birthday party of Camille Saint-Saëns, who played piano duets with Ignacy Jan Paderewski. He received his training at the Ribaupierre Institute in Lausanne, at the conservatories in Geneva and Basel, and in Vienna. He started his career as a concert recitalist and singer. In 1928, he made his stage debut in Ernst Krenek's Jonny spielt auf in Paris, and in 1929 he sang for the first time in the United States in Noël Coward's Bitter Sweet. From 1930 to 1933, he was active in Geneva, and then in Paris from 1934 to 1937. During the seasons 1937 to 1939, he made an extensive concert tour of North America. From 1940 to 1946, he taught at the Geneva Conservatory. In 1943 he resumed his operatic career singing in Johann Strauss II's Die Fledermaus in Geneva. He subsequently sang at Milan's La Scala (1951), the Glyndebourne Festival (from 1954 on) and London's Royal Opera House, Covent Garden (1954, 1956 and 1958). Cuénod was known for his roles as Basilio in Mozart's The Marriage of Figaro, the Astrologer in Rimsky-Korsakov's The Golden Cockerel, and a role written for him by Stravinsky, Sellem in The Rake's Progress. In pre-war Vienna and Paris, he frequented aristocratic salons and worked with Nadia Boulanger, with whom he made a pioneering set of recordings of madrigals by Monteverdi in 1937; after the war, the new early-music boom relied heavily on his light, unmannered, natural sound.