Complex sentence: It was soon performed in Paris under André Messager, in London under Hans Richter, and in January 1911 in Poland for the centenary of the birth of Frédéric Chopin, conducted by Paderewski's devoted friend Henryk Opieński.
Split into simpler sentences: It was soon performed in Paris under André Messager, and in London under Hans Richter. The symphony had its Polish premiere in January 1911, where it was presented to celebrate the centenary of the birth of Frédéric Chopin, conducted by Paderewski's devoted friend Henryk Opieński.