Leos Janacek is in one way a very easy composer to "place" - but in all other ways, extraordinarily difficult. The easy way to pigeon-hole him is as a Czech composer, whose works have folk-music fingerprints all over them. For those who can tell their Slovakia & their Bohemia from their Moravia, he was a Moravian through and through, albeit with a particular soft spot for Slovak music too.
Moravian River of Music