Petr Il'ich Chaikovskiy; often "Peter Ilich Tchaikovsky" in English. His names are also transliterated "Piotr" or "Petr"; "Ilitsch", "Il'ich" or "Illyich"; and "Tschaikowski", "Tschaikowsky", "Chikovsky", "Chikofsky", "Chaykovsky", "Tchaykovsky", "Chaykovskiy", "Chajkovskij", and "Chaikovsky" (and other versions; the transliteration varies among languages). The Library of Congress standardized the usage Peter Ilich Tchaikovsky.