“The Mikado; or, The Town of Titipu” is a comic opera in two acts, with music by Arthur Sullivan and libretto by W. S. Gilbert, their ninth of fourteen operatic collaborations. It opened on 14 March 1885, in London. (https://en.wikipedia.org/wiki/The_Mikado)
A year before the action of this opera begins, Nanki-Poo, son of the Mikado of Japan, fled his father’s imperial court to escape marriage with Katisha, an elderly lady. Disguised as a traveling musician, he met and fell in love with Yum-Yum, the young ward of Ko-Ko, a cheap tailor in the town of Titipu. Yum-Yum, however, was already betrothed to her guardian, and Nanki-Poo left Titipu in despair.
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