Hector Villa-Lobos is best known (perhaps only known at all today) for his Bachianas Brasileiras and Chôros that are an intoxicating cocktail of modern classical music and Brazilian folk music. But he wrote a lot of "serious" classical music as well. He wrote a bunch of symphonies and string quartets, as well as piano music. And it is certainly worth a listen.
16/44 FLAC download.
Marc-André Hamelin plays wonderfully, but if I'm honest I'll spend more time listening to the Brazilian stuff.