Mr. Cossa has sung as leading baritone with the Metropolitan, the New York City, and the San Francisco Opera Companies, as well as the opera companies of Washington, Houston, Montreal, Vancouver and Philadelphia. His wide variety of roles include Germont in La Traviata, Zurga in The Pearlfishers, Figaro in The Barber of Seville, Pierrot in Die tote Stadt, and Yeletsky in Pique Dame.
He has concertized at London's Albert Hall, and has sung operatic performances at Strasbourgh's Opera du Rhin, Milan's Teatro Nuovo, Florence's Teatro della Pergola, and Teatro Bellini in Catania, Sicily. In addition to performing a repertoire of more than fifty operas, he has appeared in recital and in concert with the New York Philharmonic, the Chicago Symphony, the Boston Symphony, and the Israel Philharmonic. He has worked with eminent conductors such as Ozawa, Bernstein, and Solti. Mr. Cossa has toured the Far East extensively with concerts in Beijing, Shanghai, Hong Kong, Seoul, Taiwan, Singapore, and Kuala Lampur.
Mr. Cossa's recording credits include complete operas with Beverly Sills (Julius Caesar: RCA), Joan Sutherland (Les Huguenots: London), and Luciano Pavarotti (Elixir of Love: London). He has also recorded When Lilacs Last in the Dooryard Bloom'd with the Boston Symphony for New World Records. He was chosen by Gian Carlo Menotti to appear in two premiers, The Hero in which he sang the title role and Tamu-Tamu in Spoleto, Italy.
Mr. Cossa can be found in Salzburg, Austria most summers teaching voice for the University of Miami Summer Program.