 During Catherine's reign the leading playwrights included Denis Fonvizin, who ridiculed the rusticity of provincial gentry and their thoughtless imitation of all things French; Vladislav Ozerov, who authored a great number of Neoclassical tragedies with touches of sentimentalism; and Yakov Knyazhnin, whose drama about a popular uprising against Rurik's rule was declared Jacobin and publicly burnt in 1791.Even Catherine's favourite poet, Gavrila Derzhavin—who sought in his odes to combine amusement with instruction—would see some of his poems banned from print during the last years of her reign.Opera reached Russia in 1731, when Empress Anna invited the Italian opera troupe to show "Calandro" by Giovanni Alberto Ristori during the celebration of her coronation in Moscow.