Ignacy Jan Paderewski (Polish: [iɡˈnatsɨ ˈjan padɛˈrɛfskʲi]; 18 November [O.S. 6 November] 1860 – 29 June 1941) was a Polish pianist and composer who became a spokesman for Polish independence. In 1919, he was the new nation's Prime Minister and foreign minister during which he signed the Treaty of Versailles, which ended World War I. Shortly after his resignations from office, Paderewski resumed his concert career to recoup his finances and rarely visited the politically-chaotic Poland thereafter, the last time being in 1924.