From 1945 to 1963, Szpilman was director of the Popular Music Department at Polish Radio. Szpilman performed at the same time as a concert pianist and chamber musician in Poland, as well as throughout Europe, Asia, and America. During this period, he composed several symphonic works and about 500 other compositions that are still popular in Poland today. He also wrote music for radio plays and films and in 1961, he created the International Song Contest in Sopot, Poland, which has been produced every summer for more than 50 years.