May 16, 1893:
Ivan Alyeksandrovich Vishnegradsky is born in St. Petersburg, Russian Empire, first of two children born to Alyeksandr Vishnegradsky, a bank director and amateur composer, and Sophie Savitch, an author.
January 25, 1937:
Ivan Alyeksandrovich Vishnegradsky (43) gives the first concert dedicated entirely to his music, in Paris.
November 10, 1945:
Cosmos, a tone poem for four pianos by Ivan Alyeksandrovich Vishnegradsky (52), is performed for the first time, in Paris. Two of the pianos are tuned a quarter-tone higher than the other two.
September 29, 1979:
Ivan Alyeksandrovich Vishnegradsky dies in Paris, Republic of France, aged 86 years, four months, and 13 days.