Martinů left Communist Czechoslovakia and composed his symphonies in the United States. All his symphonies are colorful, melodic, and scored to include piano. You can get an awesome deal on the complete set performed by Bryden Thomson and the Royal Scottish National Orchestra at Amazon (click for link). Meanwhile, Vaclav Neumann does really beautiful work in this out-of-print recording, which features the third and sixth symphonies:
Download here (no password):
Happy New Year!