How about these very juicy late-Romantic piano sonatas by Viktor Kosenko (1896-1938)...?
http://www.amazon.com/Piano-Music-Complete-Sonatas/dp/B0052034G0/ref=sr_1_1?ie=UTF8&qid=1328721494&sr=8-1 (http://www.amazon.com/Piano-Music-Complete-Sonatas/dp/B0052034G0/ref=sr_1_1?ie=UTF8&qid=1328721494&sr=8-1)
Since I enjoyed the Toccata album so much, I went looking for an accessible download store with this album (none found) but did find this recent recital of Ukrainian piano pieces:
http://www.classicsonline.com/catalogue/product.aspx?pid=1202184# (http://www.classicsonline.com/catalogue/product.aspx?pid=1202184#)
Piano Recital: Osinchuk, Juliana - BORTNIANSKY, D.S. / LYSENKO, M.V. / KOSENKO, V.S. / REVUTSKY, L.M. (Ukrainian Piano Works)
BORTNIANSKY: Keyboard Sonata #1 in B-flat, #3 in F
LYSENKO: Elegie Op.41-3
KOSENKO: Etudes Op.8 (excerpts)
REVUTSKY: 2 Preludes Op.7
SHTOHARENKO: Etudes-tableaux
Kosenko is also represented on a disc of Ukrainian violin sonatas:
http://www.classicsonline.com/catalogue/product.aspx?pid=1182053 (http://www.classicsonline.com/catalogue/product.aspx?pid=1182053)
I just found a disc of Ukrainian cello sonatas (http://www.classicsonline.com/catalogue/product.aspx?pid=893834) with Kosenko's D minor Op.10 (Dorian Recordings).
It missed my attention earlier as his name was spelled Kossenko.