Giorgio Koukl’s survey of Martinů’s complete piano music has been praised as “a delight” (Gramophone) and “estimable and important” (MusicWeb International). Since the release of Volume 4 (Naxos 8.570215), which was originally intended to be the final disc of this series, several manuscripts of previously unperformed, unknown or lost works have been discovered. For this recording of the unpublished Polkas and Waltzes (the latter are Martinů’s very first music for piano), Prague born and educated Giorgio Koukl has used manuscript sources, gaining unique insights into this often folk inflected, immediately appealing and emotionally rewarding music.