Carlos Feller

Kalman Felberbaum (30 July 1923 – 21 December 2018) was an operatic bass singer who enjoyed an international career using the professional/stage name Carlos Feller. Of Polish descent, he grew up in Argentina, and made a career in Germany, based for decades at the Cologne Opera. He specialized in comedic supporting roles, especially bad-guys and strange, quirky characters. His signature role was Don Alfonso in Mozart's Così fan tutte.

He was born near of Lviv which is in the western part of Ukraine, but was part of the Second Polish Republic at the time. The family emigrated to Buenos Aires, Argentina a few years later, and thereby avoided becoming casualties of the Holocaust. His parents originally wanted him to become a dentist; however, he soon began his vocal training at the opera school of the Teatro Colón. His stage career launched with the comprimario role of the doctor in Debussy's Pelléas et Mélisande there in 1946.

Feller stayed in Buenos Aires for more than ten years. He returned to Europe in 1958, when the Chamber Opera of Buenos Aires appeared at the World Exhibition in Brussels. He became a member of the Staatstheater Mainz, followed by engagements from 1960 at the Frankfurt Opera, and from 1962 at the Opernhaus Kiel. He appeared at the London Sadler's Wells Opera in 1958, in Cimarosa's Il maestro di cappella, and at the Edinburgh Festival as Dr. Bombasto in Busoni's Arlecchino.