▁score ▁is ▁lost . ▁ ▁Princess ▁T oto ▁( 1 8 7 6 ; ▁music ▁by ▁Freder ic ▁Clay ). ▁A ▁three - act ▁opera , ▁Gilbert ' s ▁last ▁with ▁Clay . ▁ ▁The ▁Gilbert ▁and ▁S ull ivan ▁oper as ▁All ▁of ▁these ▁com ic ▁oper as ▁are ▁full - length ▁two - act ▁works , ▁except ▁for ▁Tri al ▁by ▁J ury , ▁which ▁is ▁in ▁one ▁act , ▁and ▁Princess ▁I da , ▁which ▁is ▁three ▁acts . ▁All ▁except ▁for ▁Tri al ▁by ▁J ury ▁contain ▁spoken ▁dialog ue ; ▁the ▁dialog ue ▁in ▁Princess ▁I da ▁is ▁written ▁in ▁blank ▁verse . ▁ ▁Th es pis ▁( 1 8 7 1 ) ▁ ▁Tri al ▁by ▁J ury ▁( 1 8 7 5 ) ▁ ▁The ▁Sor cer er ▁( 1 8 7 7 ) ▁ ▁H . M . S . ▁P ina fore ▁( 1 8 7 8 ) ▁ ▁The ▁Pir ates ▁of ▁P enz ance ▁( 1 8 7 9 ) ▁ ▁P atience ▁( 1 8 8 1 ) ▁ ▁I ol ant he ▁( 1 8 8 2 ) ▁ ▁Princess ▁I da ▁( 1 8 8 4 ) ▁ ▁The ▁Mik ado ▁( 1 8 8 5 ) ▁ ▁Rud dig ore ▁( 1 8 8 7 ) ▁ ▁The ▁Ye omen ▁of ▁the ▁Guard ▁( 1 8 8 8 ) ▁ ▁The ▁G ond ol iers ▁( 1 8 8 9 ) ▁ ▁U top ia , ▁Limited ▁(