Photo by A. Eihenwald, Moscow, Russia, early 1870s 6.3 х 10.6 cm Antonio COTOGNI (1831 - 1918) was an Italian opera singer (baritone) and a music teacher. He was born and raised in Rome, Italy. Travelled as opera singer around the world, including Paris, London, and St. Petersburg, Russia. In 1894—1898, Cotogni was teaching at St. Petersburg Conservatory. His students include Giacomo Lauri-Volpi, , Mattia Battistini, and , Beniamino Gigli. Sergei Diaghilev took singing lessons from Cotogni as well. Cotogni died in Rome.