Who is a Polish politician that was also famous for performing Piano Concerto No. 4 by Anton Rubinstein?
Piano Concerto No. 4 (Rubinstein): The Piano Concerto No. 4 in D minor, Op. 70, by Anton Rubinstein is a Romantic concerto that was once highly esteemed and was in the repertoire of the Russian and Polish piano virtuosos Sergei Rachmaninoff and Ignacy Jan Paderewski. Ignacy Jan Paderewski: Ignacy Jan Paderewski, GBE (] ; 18 November [O.S. 6 November] 1860  – 29 June 1941) was a Polish pianist and composer, politician and spokesman for Polish independence.
i don't know