2018 may mark the 150th anniversary of Rossini’s death but of more interest is that it marks the 200th anniversary of the two operas he composed in 1818 — the one-act farce Adina, though not performed until 1826 in Lisbon (and rarely since) and the “dramma serio” Ricciardo e Zoraide, “a grotesque mixture of stupidities and improbabilities” according to a 1927 Rossini biographer.