Enthusiastic endorsements of recommendations are never redundant, Mark! To my mind, Novak, although the total work list is limited, is one of the great and 'not sung enough' Bohemian composers.
If the Sonata Eroica grabs you, do seek out Pan. In its original form it was composed for piano, and after a Prologue is a set of suites ('Mountains', 'Sea', 'Forest', 'Woman') celebrating nature. Wonderful work. I believe Kvapil recorded it, and since many Alto releases seem to fall into patterns I hope we'll get a second Kvapil CD of the piano music including Pan. Alternatively Chandos once had a lovely Margaret Fingerhut disc, but they seem to have allowed it to go rusty - and hence it ends up in the silly price Amazon category.
Novak later orchestrated Pan (almost doubling the duration of the piano work which lasts just under 30 minutes). It is apparently a very grand affair. There was an aged Marco Polo CD of the orchestrated version, but I've never heard it. It would be a 'natural' for Chandos - a few years ago they put out a stunning CD of Lady Godiva, Toman and the Wood Nymph, and De Profundis, and if Chandos wanted to do good for the world they should issue a second disc of Novak orchestral music.