San Toy

San Toy, or The Emperor's Own is a "Chinese" musical comedy in two acts with a book by Edward Morton, music by Sidney Jones and lyrics by Harry Greenbank and Adrian Ross. Additional songs were written by Lionel Monckton. The plot centers around a love triangle involving the daughter of a mandarin, who disguises herself as a boy to avoid marriage to a man she does not love and manages, through maneuvering and good luck to reunite with the man she loves, while all ends happily for her father and her father's private secretary.

The musical was first performed at Daly's Theatre, London, on 21 October 1899, and ran for 768 performances (edging out the same composer's The Geisha as the second longest run for any musical up to that time). The cast starred Marie Tempest in the title role, Hayden Coffin, Rutland Barrington, Huntley Wright and Scott Russell. The piece enjoyed international success. In America, San Toy opened at Daly's Theatre on Broadway on 10 October 1900. It was revived at the same theatre in 1901, 1902 and 1905, playing for a total of more than 200 performances in these productions. Marie Celeste played the title role in the original Broadway cast.The piece was regularly performed by amateur theatre groups, particularly in Britain, from 1910 through the 1930s, but it has been produced only rarely since then.

Some of the language and stereotyping in the show reflect the period in which it was written and would not now be considered politically correct, though the lyrics display a gentle mocking of the pretension of Western superiority.