Until recent years it had been generally assumed that Tchaikovsky died of cholera after drinking infected water. However, a controversial theory published in 1980 by Aleksandra Orlova and based only on oral history (i.e., without documentary evidence), explains Tchaikovsky's death as a suicide. In this account, Tchaikovsky committed suicide by consuming small doses of arsenic following an attempt to blackmail him over his homosexuality. His alleged death by cholera (whose symptoms have some similarity with arsenic poisoning) is supposed to have been a cover for this suicide. According to the theory, Tchaikovsky's own brother Modest Tchaikovsky, also homosexual, helped conspire to keep the secret. There are many circumstantial events that some say lend credence to the theory, such as wrong dates on the death certificate, conflicting testimony from Modest and the doctor about the timeline of his death, the fact that Tchaikovsky's funeral was open casket, and that the sheets from his deathbed were merely laundered instead of being burned. There are also passages in Rimsky-Korsakov's autobiography years later about how people at the funeral kissed Tchaikovsky on the face, even though he had died from cholera. These passages were deleted by Russian authorities from later editions of Rimsky-Korsakov's book. The suicide theory is hotly disputed by others, including Alexander Poznansky, who argues that Tchaikovsky could easily have drunk tainted water because his class regarded cholera as a disease that afflicted only poor people, or because restaurants would mix cool boiled water with unboiled; that the circumstances of his death are entirely consistent with cholera; and that homosexuality ("gentlemanly games") was widely tolerated among the upper classes of Tsarist Russia. To this day, no one knows how Tchaikovsky truly died. The English composer Michael Finnissy has composed a short opera, Shameful Vice, about Tchaikovsky's last days and death.