Baritone Mark Cotton has been performing opera for 30 years, garnering acclaim around the United States for his portrayals in some of the greatest operas. Having studied with such greats as Carlo Bergonzi and Franco Corelli, Cotton has performed the roles of Falstaff in Otto Nicolai’s “The Merry Wives of Windsor,” Germont in “La Traviata,” Valentin in “Faust,” Belcore in {…}