Mario Malagnini was born in Salò on Lake Garda, and from an early age he studied music at the Brescia Conservatorio passing his exams in trombone with a distinction, and was awarded with a diploma.
Having finished his instrumental studies, in 1980 he began to attend as a tenor a singing course under the guidance of Pier Miranda Ferraro at the Verdi Conservatorio in Milan where he received a diploma gaining top marks in 1984.
He began a brilliant career in Italy and abroad. He made his debut in 1984 in Milan playing a part in Il corsaro by Giuseppe Verdi.
Subsequently he earned great personal success in Madama Butterfly in Nice and Oslo, in Simon Boccanegra in Munich, in La Traviata in Bari. In October 2000 he made his debut with extraordinary success both in the Opéra Bastille in Paris and in Peking in Tosca by Puccini and in December 2000 he was the proclaimed protagonist in Stiffelio by Verdi at Teatro "Verdi" in Trieste.
In February 2002 he interpreted the role of Cavaradossi in Tosca at the Teatro Regio in Parma (including the recital of the adieu to Tosca by Raina Kabaivanska), in May, Pinkerton in Madama Butterfly at Teatro Verdi in Trieste.
In the 1999 opera season at the Arena di Verona he made his debut in the role of Conte Danilo in La Vedova Allegra. At the Arena di Verona in the summer of 2000 he sang in La Traviata and in Aida. In July 2001 he was Radames in Aida in the Arena di Verona and was greatly applauded. In July-August 2002 he sang in Carmen.
In the 2006 summer opera festival in the Arena he will perform the role of Don Josè in Carmen.