from the wikipedia article of minor 1800s composer Luigi Ricci: Then, however, he fell in love, at the same time, with both Francesca and Ludmila, the 17-year-old identical twin sisters of the singer Teresa Stolz, also singers, and this inspired him to create (in 1845) an opera for them both to sing in, at Odessa. Back in Trieste he married Ludmila (without, however, letting go of the other).
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